Breast of friends: Rita Ora poses for a very cheeky snap with two female pals

Rita Ora has a super-heroic sense of humour, and she was at it again during this playful pose. 

Dressed in a two piece Wonder Woman bikini, she had two female friends nuzzled in very close to her chest while having fun on a Miami beach.

Sharing the saucy snap with her Twitter fans, she looked shocked by her friend's intimate antics, accompanying the picture with the message: 'What!'.

A previous picture showed the singer and her two friends posing normally, moments before their wicked side got the better of them. 

It's clear the Roc Nation beauty enjoyed her break in the sun from her gruelling pop star schedule.

The pair have long been rumoured to be dating, but Ora recently denied the love reports - saying: ''Rob’s family makes their lives public. Me? I’m very private. He’s a great friend. But the only relationship I’m having now is with the tour bus.''

She was back covered up at LAX airport on Sunday, wearing a blue and white hooded top, white sunglasses and a pair of 2012 Air Jordan VI retro Olympic trainers.

Ora is making a habit of tweeting sultry pictures of herself.

Earlier this month the 21-year-old tweeted sex shots of her in a swimsuit and in a purple leotard.