mariahnicknastynudephotos.jpgLike many expectant parents, Mariah Carey and Nick Cannon have posed for portraits to commemorate this special time in their life. However, Nick thinks they may have gone too far, posing completely nude for a series of "nasty" pix!

On his radio show this morning, Rollin' with Nick Cannon, the soon-to-be dad was expressing some regret about the pix, which adorn the walls of the couple's home.

"My children are going to have to see these pictures," Cannon said. "It's a little nasty. I mean, have you ever seen your parents naked?"

Nick went on to say of his twins, "When they get older and their friends come over they will see the pictures and say, 'Your daddy's butt naked.' I don't want my naked booty out there for everyone to see!"

Shoulda thought of that before you posed for the pix!

Mariah isn't nearly as modest, though. The 42-year-old, whose first babies are due later this month, recently tweeted a pic of her belly painted with a butterfly.