The 'Hot Right Now' singer spent her Bonfire Night at Claridge's Hotel for the swanky ceremony, where she bagged the gong for Musician of the Year. Go girl!
Stunning Rita channelled ladylike chic in a form-fitting nude gown which featured a delicate lace overlay and a floor-sweeping train.
The pretty frock hugged her curves in all the right places, and she added a deep burgundy lip and smouldering smoky eyes.
Her blonde bob was styled in tousled waves and oodles of gold rings adorned her perfectly-manicured fingers.
But it wasn't long before Rita showcased her second look of the evening while posing outside the venue with model Jourdan Dunn.
The starlet rocked a full high-waisted skirt paired with a matching crop top, which showcased a sliver of her toned tum.
She went back to her roots by lacquering up with her usual pillar-box red lippy, before accessorising with a silver pendant necklace.
Also attending the event was Victoria Beckham - who picked up the Special Contribution to British Fashion Award - and her teenage son Brooklyn. The doting mother couldn't resist planting a kiss on her son's forehead while walking the red carpet - awww!
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