The 'Mama Do' singer joined a whole bevy of stars as she performed at the event, and also took the opportunity to parade her sunkissed limbs (of course!)
Pop princess Pixie, 22, looked pretty as a picture in a 60s-inspired minidress, which featured a quirky geometric print, cute collar and a super-short hemline.
Her lengthy legs were bronzed to perfection and topped with platform patent loafers, £65 from Office.
It seems Pixie is loving her chunky high street shoes - we spotted her wearing the burgundy versions back in October.
Can we get a pair too, please?
The pretty blonde backcombed her locks for heaps of volume at the roots before adding a pretty monochrome Alice band.
To finish? Thick black eyeliner, glossy lips and fabulously festive green glitter nails.
Loving your style, Pixie!
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