Amanda Seyfried is an acting "chameleon".
I like challenging people's perceptions. That's the trick. It's like a game.
The 'Red Riding Hood' actress - who has starred in a whole variety of films, from musical 'Mamma Mia!' to high school movie 'Mean Girls' to playing a lesbian in 'Chloe' - says it's important to appear in lots of different genres as then audiences will believe in your character more.
She said: "I'm an actor. I'm not a socialite. I'm playing a character, I'm playing versions of myself. For me it's important to be a chameleon.
"I like challenging people's perceptions. That's the trick. It's like a game."
Amanda also revealed how there would never be a 'Mamma Mia!' sequel, even though she really enjoyed filming the ABBA-inspired film, which also starred Meryl Streep, Colin Firth, Pierce Brosnan and Amanda's ex, Dominic Cooper.
She told Britain's Marie Claire magazine: "It was the best experience ever but a sequel is never going to happen. Like, what would they do? What would they write about? How would they get all the actors back?"