Amy Winehouse has denied ever being a size 0.The 'Rehab' singer, whose weight has plummeted in the last two years, insists she was never thinner than a size 6.Amy told the Observer Food Monthly magazine: "I didn't drop four dress sizes to a size 0."Size 0 is an Americanism, it's not even a real English term. It'd be a UK size 4, which I've never been."At my smallest I was an American size 2, which is a UK size 6. But I was never even a 12, so I dropped two dress sizes."It's a joke. It makes me laugh when people say I was a spokeswoman for curvy girls and a really good role model and now I'm a state."Amy says the weight dropped off when she stopped smoking marijuana and joined a gym.

She revealed: "I used to smoke weed from eight o'clock in the morning till three o'clock in the morning.

"And when I stopped I started going to the gym I lost a bit of weight and looked better. And that makes me a terrible role model? It's a joke."