Unlike her celeb pals, Rosie eschewed the skin-tight bodycon and plunging necklines for this beautifully demure number as she joined MIC co-star Louise Thompson and singer Ellie Goulding who treated guests to an exclusive performance.
Rosie showed off her wasp waist and slender pins in the lovely lace frock from Spotted on Celeb which boasted stunning sheer sleeves and a thigh-skimming flippy hemline.
And can we take a moment to marvel over her GORGEOUS heels?! The tousle haired babe has built up quite a collection of pom-pom stilettos since making her debut at London Fashion Week last month and this eye-catching magenta pair are her latest additions.
The style savvy babe jazzed up her white dress with a woven rainbow shoulder bag - Chanel no less - which was also emblazoned with a smattering of cutesy pom-poms.
Rosie who also dazzled at the Mark Hill Hair launch on Tuesday night, posed up a storm alongside BFF Louise before sashaying along the red carpet and into the glitzy city venue for dinner and drinks.
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