Christina Aguilera

The 42-year-old singer thinks it's important for her two children to see her in just her birthday suit so they learn to be comfortable with their own bodies.

Christina - who has son Max with ex-husband Jordan Bratman and daughter Summer Rain with fiancé Matt Rutler - said: "I think it's important that he sees mommy not be ashamed for her sexuality. We're art collectors. There are a lot of female forms around the house. Max will be growing up in a house where it's just the norm. It's only weird when you shame it."