Keira Knightley loves Helena Bonham Carter's ''mad'' style.

The 29-year-old actress confessed she loves the 'Alice in Wonderland' star's obscure fashion choices and doesn't ''give a f**k'' if she's trendy as long as she's enjoying herself.

She told Glamour magazine: ''I love what Helena Bonham Carter wears, because it's completely mad. If you're having fun, then who gives a f**k if you're trendy.''

The brunette beauty also admitted to being a huge fan of singer Bjork's infamous swan dress at the Academy Awards in 2001, which she describes as her ''all-time favourite'' red carpet outfit, although she worries her unusual fashion taste will eventually land her on a 'worst-dressed' list.

Keira - who will celebrate her milestone 30th birthday next year - said: ''That swan dress was my all-time favourite. And the fact that she was just walking down the red carpet laying eggs. That just makes me so happy.

''I always think that all those people on those 'red cross' lists are the best dressed. I tell you I'm headed in that direction. I'm always telling my stylist, Don't make me too proper,' If it's perfect I'm not interested. Because basically I just want to wear a mad dress and lay eggs everywhere.''