Mega girl group, Fifth Harmony, performed their new reggae-inspired single, 'All In My Head (Flex)' on the finale of 'Dancing with the Stars' last night (May 24). 

The song, featuring Fetty Wap, received its TV premiere on the show in front of millions.

Ally Brook, Lauren Jauregui, Normani Kordei, Camila Cabello and Dinah Jane stillied up, wigged out and shook their bodies down whilst singing what is soon to be a summer sensation.  

The girls were joined on stage by an entourage of dancers. The women wearing colourful carnival-inspired feather headdresses and the guys wearing colour sequeened shorts.

Show presenter, Tom Bergeron, asked the judging panel whether there was 'enough hip action' in the performance. 

The US stars are due to release '7/27' this Friday (May 27). Speaking to iHeartRadio recentlly, Jauregui said that the five songstrelles have matured since their first record.

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Catch their sizzling perfomance below: