Brian Bowen Smith / V Magazine

Christina Aguilera may be pregnant with her second child, but she's still totally fine stripping down naked and posing for a sexy photo shoot!

Aguilera and fiance Matthew Rutler are featured in the August 2014 issue of V Magazine, and from giant nipples to exposed butt cracks (why?!), this spread is a bit X-rated! But would we expect anything less from dirty girl Xtina?

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," the 33-year-old pop star tells the mag. Her confidence definitely shows -- and we're not sure how much she was airbrushed, but she looks fantastic here!

A heavily pregnant Demi Moore first posed nude for Vanity Fair 23 years ago, and in 1993 Cindy Crawford followed suit when she covered W mag in her birthday suit. In 2006 Britney Spears got naked and struck a similar pose for Harper's Bazaar, and in 2012, Jessica Simpson did the same thing for Elle. But why didn't Xtina get the cover shot?!