The 45-year-old actress, who has portrayed unstable women in films like Alice In Wonderland, Sweeney Todd and the Harry Potter franchise, said that she finds herself drawn to troubled characters.
She told Germany's Tele 5 website, 'I love dressing up and playing weird women. It would be boring for me to try and look as beautiful as possible on screen. [Partner] Tim Burton absolutely understands that and leaves me to choose which characters I want to play in his films.
'In my view women like that are ill, and for some reason I'm attracted to that. It makes me wonder what made them turn evil. As an actress it's my job to be understanding towards women like that and to not be judgmental. Something about this madness attracts me.'