Ireland Baldwin bared all as she stripped off to share a pregnancy update with a nude Instagram snap.
The 27-year-old posed completely naked except for a towel wrapped around her hair and used her hand to protect her modesty.
Her tattoos were on display, which include a rose at the top of her thigh and a snake wrapped around her arm.
Alec Baldwin's daughter is currently expecting her first child with her musician boyfriend RAC, born Andre Allen Anjos.
Captioning her social media snap, Ireland wrote: "bb on board." She also tagged her boyfriend in the picture.
Her fans and celebrity pals rushed to congratulate the star, with cousin Hailey Bieber commenting: "Ahhhh," while Rumer Willis, who is also expecting her first child, wrote: "Gorgeous queen."
One fan agreed, writing: "A beauty queen omg!!"
Another commented: "So happy for your family especially grandma Kim. She must be over the moon! Congratulations!!"
"You look like you are carrying well, bet you cant wait," a third fan penned, with another adding: "Special time in your life enjoy."
Ireland also took to her Instagram Story to show off another baby bump snap.
In the picture, she wore a pair of grey sweatpants and dark green hoodie, captioning her post : "Another day, another sweatpants slay."
Ireland announced her pregnancy back in December as she wished her Instagram followers a "Happy New Year".
She shared a snap of a sonogram as hundreds flocked to congratulate her and musician boyfriend.
In January, she admitted that carrying a baby has been "warfare" for her body as she opened up about her struggles on social media.
"I underestimated just how hard pregnancy would be on my mind and my body," the model wrote.
She compared herself to a "goblin", "bridge troll" and "curmudgeon". She thanked her boyfriend, saying she "would have lost [her] mind" without his help.
Ireland and RAC have a baby daughter on the way and have revealed that they plan to name her Holland.
"I'm Ireland, so another country name because we wanted to keep that consistent," Ireland explained on the Girlboss Radio podcasr.
She said Holland is a "classy" name, adding: "I've always loved that name since I was young."
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