Hilary Duff

Actress-singer Hilary Duff hates her mantle as a well-behaved pop star - because she's not out to "prove herself".

The 20-year-old was criticised by Avril Lavigne for being a "goody-goody", but Duff laments 'good' and 'bad' labels only apply to young stars - not older performers.

She says, "I said something about how she didn't like her fans dressing like her, and how she should appreciate that because it's a compliment. She called me a goody-goody.

"Everyone is trying to prove who they are, and their position. So, I'm 'the good girl.' She's 'the bad girl' or 'the party girl.' Sarah Jessica Parker doesn't take her clothes off, but she's not a 'good girl.' (Adult actors) don't get tagged like we do."