'When it just ain't happening!' Jesy Nelson leaves Little Mix bandmates in hysterics as she drops the F-bomb mid-song on stage during US Tour

They are currently touring with Ariana Grande on her US Dangerous Woman tour. 

But despite their high profile gig, Little Mix proved they could still have fun as they caused a stir during rehearsals on Tuesday.

Jesy Nelson had bandmates Perrie Edwards, Leigh-Anne Pinnock and Jade Thirlwall in hysterics after she dropped the F-bomb mid-song on stage.

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Little Minx! The girls proved they could still have fun as they caused a stir during rehearsals on Tuesday

Little Minx! The girls proved they could still have fun as they caused a stir during rehearsals on Tuesday

As the talented foursome harmonised acapella  into their microphones, Jesy hit a rather flat note. 

Swearing loudly into the microphone, her bandmates were first seen looking surprised- then bursting into hits of hysteria.

Such was their amusement, they were unable to continue their song as they suffered a bout of giggles. 

And Jesy uploaded the hilarious video to her Instagram for their fans, captioning it: 'When it just ain't happening!'.

Oops! Jesy Nelson had bandmates Perrie Edwards, Leigh-Anne Pinnock and Jade Thirlwall in hysterics after she dropped the F-bomb mid-song on stage

Oops! Jesy Nelson had bandmates Perrie Edwards, Leigh-Anne Pinnock and Jade Thirlwall in hysterics after she dropped the F-bomb mid-song on stage

Meanwhile the girls recently came under fire after they were suspected of photoshopping Jesy's waist in the new Touch video.

At the beginning of the month eagle-eyed fans claimed the bizarre tell-tale curves in the lines of the stripy background - focused around Jesy's thighs and waist - were evidence her figure had been digitally altered.

However behind the scenes footage released shortly afterwards confirmed the wall had a right angle, quickly dispelling the rumours. 

Honest: Jesy uploaded the hilarious video to her Instagram for their fans, captioning it: 'When it just ain't happening!'

Honest: Jesy uploaded the hilarious video to her Instagram for their fans, captioning it: 'When it just ain't happening!'

Jesy previously said she believed any size should be celebrated and that confidence in your body is sexy.

She told The Sun: 'We're happy to be how we are, and don't care if we put on a couple of pounds.

'I feel like curves are really in at the moment – I love that they're celebrated.' 

Unfounded: Meanwhile the girls recently came under fire after they were suspected of photoshopping Jesy's waist in the new Touch video- which was later proved false

Unfounded: Meanwhile the girls recently came under fire after they were suspected of photoshopping Jesy's waist in the new Touch video- which was later proved false

The girls appearance comes as they are set to perform at the BRITs later this month alongside Robbie Williams, The 1975 and Emeli Sandé.

Most recently Bruno Mars and Skepta were the latest acts announced to take to The O2 Arena stage on February 22.

This year’s awards will be hosted by Dermot O’Leary and Emma Willis after Michael Buble pulled out of presenting duties in light of his son Noah's illness.

This year will also see Clara Amfo, Laura Jackson and Alice Levine host The BRIT Awards 2017: Red Carpet and Backstage on ITV2, either side of the main awards show. 

Strength to strength: The girls appearance comes as they are set to perform at the BRITs later this month alongside Robbie Williams, The 1975 and Emeli Sandé

Strength to strength: The girls appearance comes as they are set to perform at the BRITs later this month alongside Robbie Williams, The 1975 and Emeli Sandé

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