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Jason Biggs

Dan Steinberg/AP Photo

America Ferrera, Katherine Heigl, T.R. Knight, Neil Patrick Harris and Jaime Pressly were among the stars who hit Saturday's Hot in Hollywood Awards and benefit for the AIDS Healthcare Foundation.

But it was this male celeb who surprised the crowd with his gender-bending appearance.

Who's the beehive boy? Find out after the jump...

It's none other than Jason Biggs! The American Pie star slipped into a dress and full makeup for the night's musical revue.

While wearing heels can be a bitch, we gotta think it's better than being known as the guy who fornicated on the big screen with an apple pie.