Christina Aguilera wows in nude pregnant photos

Christina Aguilera is baring it all --- baby bump included.

The 33-year-old singer took a series of stunning nude photographs for V magazine. She's pregnant with her second child --- her first with fiancé Matt Rutler --- who will join 6-year-old brother Max Liron Bratman (whom Aguilera had with ex-husband Jordan Bratman).

Aguilera covers her private parts with some strategically placed hands and hair in two of the photos, but also lets her breasts show through a sheer white maxi-dress in others. (Click through the the V magazine links at your own risk -- definitely NSFW.)