Lily Allen has a £6,000 dress she has only worn three times.

The 'Fear' singer prefers wearing casual clothes she feels comfortable in, and will only get her dressier items out of the wardrobe for special occasions.

Asked how she decides what to wear, Lily replied: "There are generally three factors - what's clean? What's going to make me feel fat and ugly? How many photographers are there outside my house? Usually I'll just wear trousers and a T-shirt or a dress for meetings. I've only worn my £6,000 Prada dress three times so far."

The 24-year-old star has also hit out at those who have criticised her for losing weight, claiming she decided to get in shape to make her feel better about herself not because she thought it would improve her career prospects.

She told Britain's Elle magazine: "People have had a go at me for suddenly deserting the feminist cause because I went to the gym. I f**king hate it! I'm really lazy. I like sitting or lying down.

"I don't care about endorphins or looking better. Actually, that last bit is a lie. I do want to look better, but I'm not going to torture myself about it. I just don't think girls or women should hate themselves for not living up to the ideal."