The Little Mix singer, 23, chose a super racy dress for Selena Gomez's party at Annabel's private members' club on Friday (25 September).
The black dress - which put the 'little' into LBD - had a revealing side split which flashed Leigh-Anne's fab bod.
And it's pretty clear to see the singer couldn't have been wearing any knickers in the sexy frock!
Teaming the outfit with YSL heels, Leigh was seriously smouldering as she joined bandmates Perrie Nelson and Jade Thirlwall at the event.
And we love Leigh's vampish make-up, especially the deep plum lips.
She also went for a dip-dye look with her dark hair. So hot!
Posing for a photo with host Selena, which Leigh-Anne shared on Instagram, she said: "So good to meet and hang with this beauty last night @selenagomez #annabells."
Naturally her dress provoked quite a reaction from some of her 1.1million followers.
One fan joked: "WHERE ARE YOUR UNDIES MISSY?!"
Another simply said: "Legs goals."
One spoke for all of us when she said: "Absolutely love that dress!!! 10/10."
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