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Britney Spears sends a photographer flying backwards in the video for her new single I Wanna Go.

The Oops!... I Did It Again singer has unveiled a 30-second teaser ahead of the full release on Wednesday.

In the footage, the Grammy-winner swirls a microphone lead around her head before it hits a paparazzo and he is sent tumbling.

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Britney posted the trailer on her Twitter page yesterday, just hours after wishing dad Jamie a happy Father's Day.

In the video, shot in LA, the mum-of-two is seen standing on the roof of a taxi while flashing her svelte midriff as she sings in the middle of the city.

Despite coming under scrutiny for being out-of-shape on her recent tour dates, the 29-year-old looks as slender as her Baby, One More Time era as she flashes an orange bra beneath a white leather studded jacket.

Femme Fatale: Britney shows off a lot of attitude in her new video

She also teamed the provocative outfit with black leather gloves, a ripped T-shirt and pink highlights in her hair.

While Britney rose to fame as a Mouseketeer on the Mickey Mouse Club alongside Justin Timberlake, the slogan on her top appears to have Mickey Mouse's head on it with a skull instead of his face.

Chris Marrs Piliero, who created Ke$ha video Blow, directed the video.

I Wanna Go is the third single from Britney's platinum selling seventh studio album Femme Fatale.

After kicking off her world tour in Sacramento earlier this month, the pop princess will play London's O2 on October 27.