Harry Styles is comfortable in his own skin

The One Direction boys have become very close during their two years together.

And Harry Styles is so comfortable around his band mates, he isn't afraid of stripping off and revealing his 4 nipples.

'[Harry] loves getting naked,' says 1D's Niall Horan, 18.

'He's always in his boxers.'

But despite taking every opportunity to remove his clothes, Niall says it isn't Harry's hot bod that leaves his fans feeling feverish.

It's actually the 18-year-old's hair that's made him one of the country's top pin-ups.

'He has all the power in his curls,' says Niall.

'The women love him.'

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Anna Duff