Heidi Klum bares all in a new ad for Astor cosmetics!

Heidi Klum has been the face of Astor cosmetics for more than two years, but I had no clue until these new pictures surfaced!

In her latest campaign, the super-model posed completely nude wearing nothing but body paint.

The 38-year-old looks stunning in the new picture. She posted the picture on her Twitter page, and said I had another fun photo shoot for Astor celebrating color!

Alse are... [via ICYDK]