JLS have unleashed their brand new single.

The boyband revealed the song 'Hottest Girl In The World' this morning (September 6) to radio.

The track is set to come off their forthcoming new album 'Evolution', which marks the follow-up to their 2011 hit 'Jukebox'.

'Hottest Girl In The World' sees the former X Factor contestants go up-tempo with a vibrant R&B pop feel.

JLS took to Twitter after the song's debut to thank fans for their support and kind words, tweeting:

"Thank you to all our amazing fans for your love! You are the HOTTEST girls in the WORLD!! There is no doubt about that! #ohboiOri x."