RHONY newcomer Leah McSweeney convinces Tinsley and Sonja to skinny dip during wild Hamptons party

New cast member Leah McSweeney got her friends to strip naked and trash Ramona Singer’s Southampton house on Thursday’s episode of The Real Housewives of New York City

The 37-year-old fashion designer had been fed up for days with the pretentious ways of her wealthy RHONY friends, and proceeded to show them all just how stuffy they were.

‘I’m going stir-crazy,’ she said in a confessional. ‘There’s only so much talking I can do about yachts and ‘declassé’ that I can really handle before I’m like, ‘This is how I have fun.’

Wild: New cast member Leah McSweeney (right) got her friends to strip naked and trash Ramona Singer’s Southampton house on Thursday’s episode of The Real Housewives of New York City

Outrageous: The ladies had the wildest party the franchise has ever seen on Thursday night's episode as a vibrator ended up in a dish of chicken piccata and Ramona's house got trashed

Outrageous: The ladies had the wildest party the franchise has ever seen on Thursday night's episode as a vibrator ended up in a dish of chicken piccata and Ramona's house got trashed

Outrageous: The ladies had the wildest party the franchise has ever seen on Thursday night’s episode as a vibrator ended up in a dish of chicken piccata and Ramona’s house got trashed

She stomped out to Ramona’s pool and stripped off her clothes, diving in naked but for a thong.

Tinsley Mortimer, 44, followed her, struggling to get her dress off, and joking that she was a ‘prude.’

Leah swigged from a bottle of alcohol and yelled at her: ‘Rip it off b****! Get in the pool!’

‘You know this is a ‘f*** you’ to Dale,’ Leah added, referring to Tinsley’s mother, Dale Mercer. ‘This is a f*** you to high society, f*** you Park Avenue.’

Leah threw water from the pool and her bottle up toward Ramona’s tiki torches, saying, ‘Oh my God, I hate these tiki torches. What the f***!’

The 37-year-old fashion designer had been fed up for days with the pretentious ways of her wealthy RHONY friends, and proceeded to show them all just how stuffy they were

The 37-year-old fashion designer had been fed up for days with the pretentious ways of her wealthy RHONY friends, and proceeded to show them all just how stuffy they were

'I'm going stir-crazy,' she said in a confessional. 'There's only so much talking I can do about yachts and 'declassé' that I can really handle before I'm like, 'This is how I have fun.'

‘I’m going stir-crazy,’ she said in a confessional. ‘There’s only so much talking I can do about yachts and ‘declassé’ that I can really handle before I’m like, ‘This is how I have fun.’

She stomped out to Ramona’s pool and stripped off her clothes, diving in naked but for a thong.

Tinsley Mortimer, 44, followed her, struggling to get her dress off, and joking that she was a 'prude.'

Tinsley Mortimer, 44, followed her, struggling to get her dress off, and joking that she was a ‘prude.’

Leah threw water from the pool and her bottle up toward Ramona's tiki torches, saying, 'Oh my God, I hate these tiki torches. What the f***!'

Leah threw water from the pool and her bottle up toward Ramona’s tiki torches, saying, ‘Oh my God, I hate these tiki torches. What the f***!’

‘Why?’ asked a bemused Tinsley, who had thought the torches were ‘fun.’

‘Because they suck,’ Leah said. ‘They just represent bulls***!’

Sonja Morgan, 56, wandered outside, where Leah lured her into the pool, screaming ‘Sonja!’

She threw another tiki torch into the bushes, and Sonja copied her before stripping off every stitch of her clothing.

‘I feel young again, and fun!’ Sonja said, carrying a bottle of wine and a glass into the pool.

Sonja Morgan, 56, wandered outside, where Leah lured her into the pool, screaming 'Sonja!'

Sonja Morgan, 56, wandered outside, where Leah lured her into the pool, screaming 'Sonja!'

Sonja Morgan, 56, wandered outside, where Leah lured her into the pool, screaming ‘Sonja!’

'I feel young again, and fun!' Sonja said, carrying a bottle of wine and a glass into the pool

‘I feel young again, and fun!’ Sonja said, carrying a bottle of wine and a glass into the pool

Daring: The ladies were having the time of their lives as they sipped champagne in the pool

 Daring: The ladies were having the time of their lives as they sipped champagne in the pool

The episode had begun on a more contentious note, as Tinsley and Sonja fought over whether Tinsley had once been a ‘trophy wife’ when she was married, which she denied.

‘The first rule of trophy wife is, if you have to explain you weren’t a trophy wife you probably were a trophy wife,’ Leah told the cameras, echoing the famous Fight Club line.

Privately, she said she was surprised Sonja talked so much about the posh, yacht-filled life she lived when she was married to ex John Adams Morgan, not the life she was currently living.

‘The yacht has sailed honey,’ Leah emphasized. ‘You need to get over that s***.’

The episode had begun on a more contentious note, as Tinsley and Sonja fought over whether Tinsley had once been a 'trophy wife' when she was married, which she denied

The episode had begun on a more contentious note, as Tinsley and Sonja fought over whether Tinsley had once been a ‘trophy wife’ when she was married, which she denied

'The first rule of trophy wife is, if you have to explain you weren't a trophy wife you probably were a trophy wife,' Leah told the cameras, echoing the famous Fight Club line

‘The first rule of trophy wife is, if you have to explain you weren’t a trophy wife you probably were a trophy wife,’ Leah told the cameras, echoing the famous Fight Club line

Ramona Singer, 63, called Luann de Lesseps, 54, to apologize for having given her the basement room in her home to stay in the day before

Ramona Singer, 63, called Luann de Lesseps, 54, to apologize for having given her the basement room in her home to stay in the day before

It had upset Lu so much she'd left in the middle of the night, but mollified, she came back the next day to beat Ramona at tennis

It had upset Lu so much she’d left in the middle of the night, but mollified, she came back the next day to beat Ramona at tennis

Ramona Singer, 63, called Luann de Lesseps, 54, to apologize for having given her the basement room in her home to stay in the day before.

It had upset Lu so much she’d left in the middle of the night, but mollified, she came back the next day to beat Ramona at tennis.

She also flirted with her tennis pro, and Sonja’s dog groomer, who came to the house to take care of a puppy and ended up giving Luann a massage.

‘If there’s a man in the house, you know Luann is on it,’ Ramona said. ‘She’ll say I’m the flirt? Bulls***. She’s the biggest flirt I ever met.’

She also flirted with her tennis pro, and Sonja's dog groomer, who came to the house to take care of a puppy and ended up giving Luann a massage

She also flirted with her tennis pro, and Sonja’s dog groomer, who came to the house to take care of a puppy and ended up giving Luann a massage

Leah set the table for lunch, and Ramona sniped that she'd done it incorrectly, which she hadn't

Leah set the table for lunch, and Ramona sniped that she’d done it incorrectly, which she hadn’t

'I was raised to respect my elders,' Leah cracked to the cameras, saying nothing.

‘I was raised to respect my elders,’ Leah cracked to the cameras, saying nothing.

Leah set the table for lunch, and Ramona sniped that she’d done it incorrectly, which she hadn’t.

‘I was raised to respect my elders,’ Leah cracked to the cameras, saying nothing.

Luann, who was sober, shared with her friends that she’d been having a tough time not drinking lately as she missed feeling like part of the group.

Even Leah, who’d abstained from drinking for months, and had once gone to rehab, was imbibing again.

That evening, the women skipped out on a party hosted by Ramona’s friend to stay at home and hang out with one another.

‘I am so happy that tonight is gonna just be girl bonding, and I can let loose and not have to worry about any weirdo white dudes showing up,’ Leah said, referring to Ramona’s last party

Just then, Ramona's friend Jeff showed up and started flirting with Luann

Just then, Ramona’s friend Jeff showed up and started flirting with Luann

Leah, who had been trying not to drink, picked up Tinsley's cocktail and downed it, realizing at the last moment that it had vodka in it

Leah, who had been trying not to drink, picked up Tinsley’s cocktail and downed it, realizing at the last moment that it had vodka in it

‘I am so happy that tonight is gonna just be girl bonding, and I can let loose and not have to worry about any weirdo white dudes showing up,’ Leah said, referring to Ramona’s last party.

Just then, Ramona’s friend Jeff showed up and started flirting with Luann.

Leah, who had been trying not to drink, picked up Tinsley’s cocktail and downed it, realizing at the last moment that it had vodka in it.

‘If Leah wants to drink, she’s around safe, good company,’ Tinsley said in a confessional. ‘As long as she’s drinking around me, I think I got this. She’s not gonna go off the deep end. Hopefully. Maybe.’

Moments later, Tinsley and Sonja were playing cocktail pong, trying to flip a plastic ball into thin-stemmed glasses.

‘Drink, b****,’ Tinsley repeated, over and over until Sonja was throwing up in the bushes.

'If Leah wants to drink, she's around safe, good company,' Tinsley said in a confessional. 'As long as she's drinking around me, I think I got this. She's not gonna go off the deep end. Hopefully. Maybe.'

‘If Leah wants to drink, she’s around safe, good company,’ Tinsley said in a confessional. ‘As long as she’s drinking around me, I think I got this. She’s not gonna go off the deep end. Hopefully. Maybe.’

Moments later, Tinsley and Sonja were playing cocktail pong, trying to flip a plastic ball into thin-stemmed glasses.

Moments later, Tinsley and Sonja were playing cocktail pong, trying to flip a plastic ball into thin-stemmed glasses.

Sonja waggled a dildo at Jeff, and fell on the floor rolling around with Tinsley

Sonja waggled a dildo at Jeff, and fell on the floor rolling around with Tinsley

As Tinsley, Leah and Sonja danced sloppily in the kitchen, Luann compared the evening to a frat party, and wondered if she’d been that embarrassing when she used to get drunk.

‘There are nights when I really miss drinking,’ she admitted. ‘Tonight is not one of those nights.’

Sonja waggled a dildo at Jeff, and fell on the floor rolling around with Tinsley, as Leah said, ‘Sonja, I think I’m going to have to put my finger up your a** to calm you down.’

‘I think I’m going to leave,’ Jeff told Ramona.

Leah said, 'Sonja, I think I'm going to have to put my finger up your a** to calm you down.'

Leah said, ‘Sonja, I think I’m going to have to put my finger up your a** to calm you down.’

'I think I'm going to leave,' Jeff told Ramona

‘I think I’m going to leave,’ Jeff told Ramona

Airing it out: Dorinda responded to a claim that Ramona had made the night before—that Dorinda would soon be through with her boyfriend John Mahdessian

Airing it out: Dorinda responded to a claim that Ramona had made the night before—that Dorinda would soon be through with her boyfriend John Mahdessian

Airing it out: Dorinda responded to a claim that Ramona had made the night before—that Dorinda would soon be through with her boyfriend John Mahdessian

'There's a side of Dorinda that is not totally happy with her relationship with John, and I know she realizes it down deep, and I wanted to hit her over the head with it,' Ramona explained

‘There’s a side of Dorinda that is not totally happy with her relationship with John, and I know she realizes it down deep, and I wanted to hit her over the head with it,’ Ramona explained

Dorinda swore she loved John, comparing him to 'the foundation' of a house.

Dorinda swore she loved John, comparing him to ‘the foundation’ of a house.

Inside Ramona’s house, Dorinda Medley, 55, was responding to a claim that Ramona had made the night before—that Dorinda would soon be through with her boyfriend John Mahdessian.

Dorinda swore she loved John, comparing him to ‘the foundation’ of a house.

Ramona said she knew John had hit on other women, some of whom were in relationships.

‘There’s a side of Dorinda that is not totally happy with her relationship with John, and I know she realizes it down deep, and I wanted to hit her over the head with it,’ Ramona explained.

Luann called Ramona ‘the Dr. Kevorkian of relaying sensitive information.’

Tinsley, Leah and Sonja were by now in the pool.

Tinsley yelled for Dorinda, and Sonja replied, ‘Oh no, don’t invite Dorinda, ’cause that’ll squash the whole thing.’

Ally: Luann called Ramona 'the Dr. Kevorkian of relaying sensitive information.'

Ally: Luann called Ramona ‘the Dr. Kevorkian of relaying sensitive information.’

Girls just wanna have fun: Tinsley, Leah and Sonja were by now in the pool

Girls just wanna have fun: Tinsley, Leah and Sonja were by now in the pool

Tinsley yelled for Dorinda, and Sonja replied, 'Oh no, don't invite Dorinda, 'cause that'll squash the whole thing.'

Tinsley yelled for Dorinda, and Sonja replied, ‘Oh no, don’t invite Dorinda, ’cause that’ll squash the whole thing.’

'She needs to put a spell on us,' Leah drunkenly opined. 'I love her…' Sonja began. 'She's not a judgy person.'

‘She needs to put a spell on us,’ Leah drunkenly opined. ‘I love her…’ Sonja began. ‘She’s not a judgy person.’ 

When Luann came out, Leah ordered her to 'take the denim outfit off and get in the f***ing pool. Look at your titties, they're perfect!'

When Luann came out, Leah ordered her to ‘take the denim outfit off and get in the f***ing pool. Look at your titties, they’re perfect!’

‘She needs to put a spell on us,’ Leah drunkenly opined.

‘I love her…’ Sonja began. ‘She’s not a judgy person.’

‘Whatever!’ Leah yelled, throwing her wine. ‘I don’t give a f***!’

Sonja murmured at the guests inside not to be a ‘wet blanket’ like tennis star John McEnroe, 61, whom she had once dated and who got into the hot tub with his ‘whitey-tighties on.’

Tinsley whipped off her bra, making Sonja say, ‘Oh, how nice are those boobs!? I love ’em, I love ’em, I love ’em!’

When Luann came out, Leah ordered her to ‘take the denim outfit off and get in the f***ing pool. Look at your titties, they’re perfect!’

Lu walked back inside, followed by Leah, who donned a sheer top but kept her bra off

Lu walked back inside, followed by Leah, who donned a sheer top but kept her bra off

'You need to get that done,' Dorinda told her, pointing to her boobs. 'It doesn't look good.'

‘You need to get that done,’ Dorinda told her, pointing to her boobs. ‘It doesn’t look good.’

'What, they're saggy?' Leah asked. 'Body shame me again.'

‘What, they’re saggy?’ Leah asked. ‘Body shame me again.’

Dorinda reminded Leah she had a daughter and put a Post-It note on Leah's nipple

Dorinda reminded Leah she had a daughter and put a Post-It note on Leah’s nipple

Lu walked back inside, followed by Leah, who donned a sheer top but kept her bra off.

‘You need to get that done,’ Dorinda told her, pointing to her boobs. ‘It doesn’t look good.’

‘What, they’re saggy?’ Leah asked. ‘Body shame me again.’

Dorinda reminded Leah she had a daughter and put a Post-It note on Leah’s nipple.

She walked her into the bathroom to put a camisole on her, where she was heard asking Leah, ‘Why are there wings on your vagina?’

Fixed: Dorinda walked Leah into the bathroom to put a camisole on her

Fixed: Dorinda walked Leah into the bathroom to put a camisole on her

'You're more powerful than your ex-husband's last name,' Leah exclaimed, pointing to Tinsley and Sonja. 'Lose Mortimer. Lose Morgan.'

'You're more powerful than your ex-husband's last name,' Leah exclaimed, pointing to Tinsley and Sonja. 'Lose Mortimer. Lose Morgan.'

‘You’re more powerful than your ex-husband’s last name,’ Leah exclaimed, pointing to Tinsley and Sonja. ‘Lose Mortimer. Lose Morgan.’

She slammed her bottle down on the counter, growling, '1985 is gone. It's over. F*** JP Morgan.'

She slammed her bottle down on the counter, growling, ‘1985 is gone. It’s over. F*** JP Morgan.’

‘Because it flies!’ Leah growled, to which Dorinda replied, ‘No, no, no, no they don’t fly.’

In a confessional, Dorinda said, ‘I Dorinda Medley, for the first time in a long time, am speechless. Like an Alien movie! Wings. Right from the vagina!’

Luann picked that moment to leave, and Ramona decided to go to a friend’s party, even though drunken women were running around her house.

Sonja started in on the group’s friend, Elyse Slaine, who’d called her an ‘accessory’ to her ex-husband, John Adams Morgan, the night before.

‘You’re more powerful than your ex-husband’s last name,’ Leah exclaimed, pointing to Tinsley and Sonja. ‘Lose Mortimer. Lose Morgan.’

'Give me another one, I'll f*** him,' Sonja joked, asking the cameras, 'When did this party become Occupy Hamptons?'

‘Give me another one, I’ll f*** him,’ Sonja joked, asking the cameras, ‘When did this party become Occupy Hamptons?’

'You're not a Morgan,' Dorinda told Sonja, reviving an old argument

‘You’re not a Morgan,’ Dorinda told Sonja, reviving an old argument

'I'm a Morgan!' Sonja screamed. 'I'm in the Blue Book!'

‘I’m a Morgan!’ Sonja screamed. ‘I’m in the Blue Book!’

She slammed her bottle down on the counter, growling, ‘1985 is gone. It’s over. F*** JP Morgan.’

‘Give me another one, I’ll f*** him,’ Sonja joked, asking the cameras, ‘When did this party become Occupy Hamptons?’

‘You’re not a Morgan,’ Dorinda told Sonja, reviving an old argument.

‘I’m a Morgan!’ Sonja screamed. ‘I’m in the Blue Book!’

In a confessional shot later, Tinsley considered, ‘Maybe this is why Leah stopped drinking for a while.’

Leah pointed at Sonja, shouting, ‘Don’t get all socialite on me!’ and Sonja rebutted, ‘Don’t get all socialist with me!’

Leah pointed at Sonja, shouting, 'Don't get all socialite on me!' and Sonja rebutted, 'Don't get all socialist with me!'

Leah pointed at Sonja, shouting, 'Don't get all socialite on me!' and Sonja rebutted, 'Don't get all socialist with me!'

Leah pointed at Sonja, shouting, ‘Don’t get all socialite on me!’ and Sonja rebutted, ‘Don’t get all socialist with me!’

Sonja went to the bathroom and Leah approached her on the toilet

Sonja went to the bathroom and Leah approached her on the toilet

They kept yelling at each other, until Sonja stood up and hugged her and put her hands on her breasts

They kept yelling at each other, until Sonja stood up and hugged her and put her hands on her breasts

They kept yelling at each other, until Sonja stood up and hugged her and put her hands on her breasts

Sonja went to the bathroom and Leah approached her on the toilet. They kept yelling at each other, until Sonja stood up and hugged her and put her hands on her breasts.

‘If this group went into group therapy, the therapist would commit suicide,’ Elyse noted.

In the morning, the house was a disaster, with ‘glasses in a wine glass, a vibrator in a chicken,’ Leah told Ramona, who then went outside and saw the torches strewn about.

Mess: In the morning, the house was a disaster, as Ramona and Leah surveyed the damage

Mess: In the morning, the house was a disaster, as Ramona and Leah surveyed the damage

Who did that: Somehow, a pair of glasses ended up in a wine glass and a vibrator ended up in a plate of chicken piccata

Who did that: Somehow, a vibrator ended up in a plate of chicken piccata

Who did that: Somehow, a pair of glasses ended up in a wine glass and a vibrator ended up in a plate of chicken piccata

Party house: Ramona headed outside to see torches strewn around the yard

Party house: Ramona headed outside to see torches strewn around the yard

Party house: Ramona headed outside to see torches strewn around the yard

‘I’m pissed,’ Ramona said, as Leah slowly began to remember what she’d done.

Ramona went upstairs to confront Dorinda and Sonja, who hid under their bed’s blankets, giggling, then blamed Leah for the torches.

Leah cleaned the kitchen before Ramona even came back down, and Ramona forgave her.

Dorinda remembered that Ramona had trashed her own house years ago, laughing about ‘the cojones of Ramona.’

Leah helped pick up the tiki torches, admitting, ‘I thought I was in Game of Thrones.’

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'I'm pissed,' Ramona said, as Leah slowly began to remember what she'd done

‘I’m pissed,’ Ramona said, as Leah slowly began to remember what she’d done

Ramona went upstairs to confront Dorinda and Sonja, who hid under their bed's blankets, giggling, then blamed Leah for the torches

Ramona went upstairs to confront Dorinda and Sonja, who hid under their bed’s blankets, giggling, then blamed Leah for the torches

Ta-da! Leah cleaned the kitchen before Ramona even came back down, and Ramona forgave her

Ta-da! Leah cleaned the kitchen before Ramona even came back down, and Ramona forgave her