The 'Mama Do' singer looked pretty as a picture in her super-cute outfit as she posed on the red carpet before taking to the stage at the Fusion Festival.
Clearly wanting to show off her flat-as-a-pancake tum, the starlet wore a red checked bralet complete with a frilly hem, which she paired with a matching itsy-bitsy high-waisted miniskirt.
The stylista kept things comfy for her performance by ditching the towering stilettos, instead topping her never-ending pins with a pair of beige platform brogues.
Her golden blonde locks were styled in retro-inspired, voluminous waves and she accessorised with dainty silver rings and a fluffy white hair clip.
And on closer inspection we noticed songstress Pixie was rocking gorge new nail art, flaunting a monochrome stripey design painted on each pointer. Cute!
We're going to be seeing a lot more of Pixie and her fab outfits as she's been signed up to appear on this year's Strictly Come Dancing.
"I'm so excited to be doing Strictly, it's going to be a lot of fun," she said. "I always want to push myself as a performer so can't wait to learn the routines."
She'll join the likes of The Saturdays' Frankie Bridge, presenter Caroline Flack and former TOWIE star Mark Wright on the show, which is set to return to BBC One this Sunday (7 September).
We can't wait to see them in action!
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Watch Pixie's video for 'Nasty' below: