She managed to keep her entire pregnancy a secret before revealing she’d given birth earlier this year in September.
On Sunday, Billie Lourd treated fans to a little glimpse of her life as an expectant mother, posting a throwback photo of herself pregnant.
In the never-before-seen shot, Billie, 27, looks joyous as she holds her bump, posing in a a long-flowing maternity dress.
She previously revealed she had given birth, simply tweeting, ‘Introducing: Kingston Fisher Lourd Rydell,’ which showed the baby in what appeared to be a Star Wars-inspired outfit, with his little feet adorably poking out.
Surprise! Billie Lourd reveals she has welcomed a baby boy with fiance Austen Rydell… and pays tribute to late mom Carrie Fisher with his name
The news will certainly come as a big surprise to fans of the American Horror Story actress, as she had not made any formal announcement that was pregnant.
DailyMail.com reached out to representatives for the young star, who confirmed the news.
Billie was flooded with messages from fans and celebrities, including Bravo’s Andy Cohen who commented: ‘Can’t wait to meet him.’
Parents! The arrival of their first child comes months after Austen revealed he and Billie had got engaged
Star Wars family: Mark Hamil, who played Carrie Fisher’s onscreen brother in Star Wars, congratulated Billie on Twitter writing ‘Congratulations…I can’t think of another baby with both “King” and “Lord” in their name. Nice’
It was revealed in June that Billie and Austen were engaged when he posted a snap of the couple, with the caption: ‘She said YES!! (Actually she said “Duhhh”) But I guess that’s better than yes?!?’
In July, Austen shared a gushing post about Billie for her birthday, writing: ‘Happy Birthday to my FIANCÉ @praisethelourd !! Your birthday feels like my birthday! I ❤️ YOU!! Here we go!!!’