Kristen Stewart thinks she is a "crazy cat lady".

The 20-year-old actress - best known for her portrayal of Bella Swan in 'The Twilight Saga' - believes she leads a boring life because she spends so much time at home with her beloved pet.

She said: "I'm so boring. No I am. I sit in my house with my cat. I'm a crazy cat lady, just give me a couple of years. I have one cat but I'm obsessed with him."

The 'Runaways' star, who is believed to be dating her 'Twilight' co-star Robert Pattinson, also admits she would like to work on more light roles following a number of dark characters but finds choosing the right part difficult.

She added to US TV show 'Extra': "I would love to do something a little lighter. It just has to be good. It's rare for romantic comedies to be solid, solid good.

"I have a really hard time planning out stuff. I don't do that. I read a script and I do it based on a serious gut instinct, like, 'I feel so compelled to do that.'

"It's a ridiculous thing to play out some fake life and so whatever character I choose to play I feel like if I don't bring them to life then I'm killing someone I love. So I don't know what I want to do, I just want to have that feeling."