Okay,
so she's not so much naked as she is scantily-clad in a see-through
dress, but whatevs: she's about as close to naked as you're going to to
see in a candid shot, so it counts.
Yep, that would be Xtina, rocking the x-rated maternity wear. You gotta give her credit for the nerve.
Source
Other naked famous women:
