Rihanna's debuted her new do on Twitter. This time it's dreads.

The star's ever-changing locks have been well documented over the years - some we like, and some not so much. See the gallery below for a round up.

In this pic, she looks up to the camera in a solemn goth-esque pose wearing a brightly coloured T-shirt.

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Rihanna's got a new do

The Talk That Talk singer uploaded the image with the hastag #ibethatprettymuthaphucka. But we beg to differ.

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Another of RiRi's hairdos

The star has had a tough time of late, after the death of her beloved 'GranGran' she pulled out of the Rock In Rio festival in Madrid.

She put on a star performance at London's Wireless festival over the weekend, where she thanked festival goers for staying despite the rain.

> IN PICS: RIHANNA'S EVER CHANGING LOCKS