Topless Justin Bieber shows off his purple hair

Justin Bieber posed topless at the gym for his Instagram followers. Photo / Instagram

Justin Bieber has flashed his new purple locks while giving his Instagram followers an eyeful.

The 21-year-old singer flooded his social media with photos of himself just wearing a white towel around his waist, showing off his new purple and white ombre hair.

Taking a selfie in a bathroom mirror, looking like he's just come out of the shower, Bieber captioned the photos "back in the gym".

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back in the gym,

A post shared by Justin Bieber (@justinbieber) on Jan 16, 2016 at 11:03am PST

Seems like fans were more interested in his state of undress, with one of his 54.1 million followers saying "there how I wanted that towel fall".

He is also seen leaning against a Ferrari, with his purple locks peeking out from under a black hoodie.

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A post shared by Justin Bieber (@justinbieber) on Jan 15, 2016 at 8:49pm PST

Bieber might be channeling a new hair trend called mermaid hair, with hues of blue, purple and green popular colours.

- AAP