Emma Watson has turned down roles in US teen movies because she doesn't want to play a rebel.

The actress admitted that she is careful about the film roles that she applies for and joked that she won't be following in the footsteps of Harry Potter co-star Daniel Radcliffe, who appeared naked in West End play Equus.

"I won't be appearing naked on stage with a horse! But I am waiting for the right opportunity for me," Emma is quoted by the Daily Star Sunday as saying.

She added: "I'm not a rebel. I usually do what I'm told. But I don't think it is worth playing the role of a teenager who wants to rebel against the world. To be honest, that's my worst nightmare. Auditions are really hard and being rejected is always a bad experience. But I'll keep trying."