The 25-year-old struck a sassy pose as she showed off her ample bosom and tiny waist in her sexy stage ensemble.
Leigh-Anne’s unusual top featured one long sleeve and a choker style neckline which drew attention to her decolletage.
She paired the sexy crop top with some leather-look one-legged trousers.
The brunette babe has also given her hair the chop and wore her shorter locks in loose waves and went for a dramatic deep brown lipstick for her make-up look.
Little Mix are currently on the UK leg of their world tour before they head to Australia and New Zealand.
Meanwhile, Leigh-Anne has just returned to her day job in one of the world’s most successful girl bands after enjoying a luxury holiday with boyfriend Andre Grey.
Sexy Leigh-Anne took to Instagram to show off her exotic holiday getaway in Marbella – complete with crystal clear waters and golden sands.
To celebrate her romantic getaway on the island, Leigh-Anne posted a cheeky picture of herself covering her breasts after whipping her top off to go for a bare-breasted dip.
In another photo Leigh-Anne straddles a fallen tree and shows off her peachy bum as she looks out at the idyllic view. More photos