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!!!’
In December 2017, the Star Wars: The Last Jedi actress tagged the actor in a tribute when she marked one year since the passing of her mom, Carrie Fisher, and grandmother, Debbie Reynolds.
When Lourd visited the Northern Lights in honor of her mom, she took Austin along for the journey, also tagging him in the touching post.
Family: Billie tagged the actor in a tribute when she marked one year since the passing of her mom, Carrie Fisher, and grandmother, Debbie Reynolds in December 2016 (pic, 2015)
Taking the plunge: Austen recently shared this snap of his fiance Billie Lourd
Lourd was previously linked to Twilight star Taylor Lautner, who began dating at the start of 2017, just shortly after her mom and grandma’s unexpected deaths. But they parted ways a few months later.
Her mom Fisher died of a heart attack on December 27, 2016, a few days later her grandmother Reynolds suffered a stroke.
In 2018, Lourd revealed that her fiance Rydell has whisked her away on a surprise birthday trip.
Close: Billie and her mom Carrie on the set of Star Wars: The Force Awakens
‘This king just surprised me with a 24 hour trip to Vegas and it’s safe to say I’m obsessed [with] him,’ she wrote on Instagram.
For the engagement news, Rydell posted no less that 10 happy couple shots to his Instagram page, including one of them kissing at Coachella music festival.
Star Wars actor Mark Hamill’s daughter Chelsea was one of the first to congratulate the happy couple on their news.
Kiss: Rydell and Lourd are seen smooching in an intimate snap posted to his Instagram account
Happy days: The couple have been dating for a number of years