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Jessie J says she is planning to shave her head to raise money for charity.

The Price Tag singer wants to go bald on live TV next year to earn cash for five charities close to her heart.

Jessie says her trademark black bob has become "too much of a thing" and that she wants to raise £1m every year by doing something "unexpected".

The 23-year-old was inspired to do something by secret hospital visits to meet sick children while she was recovering from her broken foot.

"I'm so ready for it," Jessie told Newsbeat. "Bic it, powder it, who cares? My hair will grow back.

"There are times when I wish I could have done marathons, but with my heart problem I couldn't - but there are things I can do to raise money.

"There are a lot of celebrities who would say 'I'd shave my hair' but they wouldn't."

Jessie, who has just had the cast removed from her broken foot, said visiting terminally ill children helped her appreciate life more.

She didn't publicise the visits or tweet about them because she didn't want it to seem like self-promotion.

"It really frustrates me when artists go 'I'm going to Great Ormond Street' and they tell the paparazzi," said Jessie.

The star admits that taking the clippers to her hair will be a big thing, but she's hoping it will raise lots of cash.

"My bob has become too much of a thing - and I want to get rid of that. I want to just make money and think it's going to be an amazing way to do it.

"I'm going to do it on live TV and pick five charities that mean something to me.

"I'm going to do something every year - raise a million every year and do something people wouldn't expect me to do."

Jessie is due to perform at Wednesday's Mobos, where she's up for five awards - best album, newcomer, UK act, video and song.