The former Girls Aloud singer, 34, proved her style credentials and slipped into this stunning monochrome number that boasted a thigh-high split (HEL-LO, perfect pins), a slinky body and white epaulettes on the shoulders.
Sarah looked beautifully polished in the oh-so-chic, floor-sweeping gown as she made her way down the red carpet alongside celebrity guests including Ben Affleck and Bodyshockers presenter Katie Piper, but it was her hair that really stole the show.
The gorgeous bronde unleashed her inner 90s chick and rocked a cool mussed up bun which featured textured tousles that framed her face and oodles of volume at the crown. A pair of sassy gold hoop earrings and a smudge of jet black kohl totally completed the retro look.
Sarah stood tall in a pair of black cage sandals with a KILLER stiletto heel and pulled a series of catwalk-worthy poses for the bedazzled photographers before escaping the freezing cold to sit with her famous pals.
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