The singer wore suspender-style trousers which showed off her tanned, toned thighs.
Jesy, 22, teamed the red and black patterned cutaway trousers with a black crop top and plenty of costume jewellery.
Along with Little Mix bandmates Perrie Nelson, Jade Thirlwall and Leigh-Anne Pinnick, she performed at summer music festival North East Live, which took place at Sunderland's Stadium of Light on Saturday (June 22).
Using their official Twitter account, the girls tweeted: "Yesterday was so much fun feel so lucky to be doing what were doing # loving life."
Jade added: "Loved being back home playing @North_Eastlive :D xxjadexx"
JLS, Rita Ora, Union J, Amelia Lily, Stooshe, Lawson, The Wanted, Conor Maynard and James Arthur also performed.
Do you like Jesy's unusual outfit? Tell us your opinion below!
Watch Little Mix's video for 'Wings' below: