Mischa Barton has vowed never to have a boob job - because she fears being too sexy.

Asked if she would prefer to have bigger breasts like OC co-star Rachel Bilson, the actress told Bliss magazine, "No! 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."