Rosario Dawson longs for a bigger butt

musical 'Rent' playing a character said to have the "best ass below 14th Street", fears her derriere does not fit the bill.

Rosario told GQ magazine: "I was so excited because I grew up on 13th Street and I told my mom about it and she said, 'They say you have the best ass below 14th Street? You?!' "I guess I'm the only actress who wants a bigger butt. I've been working on it."

The 'Alexander' star says she enjoys playing sexual parts, but thinks there is more to her than just being alluring. She said: "I like exploring my sexuality and my body but I don't think it's ever gratuitous at all. "Even if you see me on the cover of a magazine I'm not going to be up there like some porn star. I don't need anyone to think I'm sexy. It's about being myself and owning it. I think that's sexy."