Remember this famous Demi Moore pic? Of course you do!
It takes a brave woman to recreate the image which appeared on the front of Vanity Fair magazine after being shot by renowned photographer Annie Leibovitz (pictured). And since 1991 a handful of celebs have showed off their baby bumps in shoots inspired by Demi including Britney Spears, Miranda Kerr and Mariah Carey.
Sharing the picture, Christina said she was excited to bare her "soul and body" at such a special time in her life.
Thanking the team behind the photo shoot, the singer said: "I couldn't appreciate you & your team more for bringing to life such an epic shoot. Giving me the freedom to bare my soul & body at this incredible, magical, transition time in my life. #Grateful"
It appears Christina is loving her baby bump and fully embracing her second pregnancy. Speaking to the mag about her pregnancy, she said: "As a woman, I'm proud to embrace my body through all stages of life, staying fearless and confident in surrendering to the unknowns the future has in store."
Christina is expecting a baby girl with her man Matthew Rutler. It's the singer's second child. She has a six-year-old son, Max from a previous marriage.
The Beautiful singer met Rutler on the set of movie Burlesque back in 2010 where he was a film assistant.
LOVE XTINA? Well here's a selection of some of her past styles...