Leona Lewis admits it's a "challenge" to find ethical clothing.

The 'Happy' singer - who is a strict vegetarian - refuses to wear any animal products and as a result struggles to find suitable outfits so is looking forward to launching her fashion line to make it easier.

She said: "I'm trying to make that happen as soon as I can. It's a challenge - mostly with shoes - as I don't wear any leather and am very ethical about what I wear. I love wearing Stella Mccartney, but one day I hope to have to my own line of ethical clothes and accessories."

Despite her difficulties, Leona is a huge fashion fan and loves getting "creative" with her look.

She told vogue.com: "I really enjoy fashion and I love being creative. I work with a couple of stylists but I love fashion so am always looking online and in magazines for inspiration. I have so much fun working with my hair, make-up and styling team - we are always laughing. I do get a bit nervous though as I start having to get in the car, but once I'm on the carpet I really enjoy myself."