The 19-year-old actress, who plays troubled teen MARISSA COOPER in the hit show, would love to be curvy like Bilson, who plays her on-screen best pal SUMMER.
Barton says, "I feel tall and Lanky next to her, but I'd be scared of having her boobs and voluptuousness!
"I would never have a boob job. I like being understatedly sexy. Rachel's curves make her more overtly sexual than I am."