Emma Watson stood out from the crowd in an uncharacteristically quirky outfit. The former Harry Potter star wore a Balenciaga ivory bolero top with dramatic shoulder detail and black trousers that put her toned midriff on display.
Emma scooped the Woman of the Year award. After the ceremony, she tweeted, "@BritishGQ Mus throwing, general hilarity and great company at the awards tonight. Very proud to be part of your female contingency. Thank you!"
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Also baring her abs was Jessie J, who wore a tiny black satin strapless bandeau and a full satin skirt.
Monochrome seemed to be the order of the evening, with Daisy Lowe and Rosie Huntington-Whiteley also rocking white and black outfits.
Model Daisy wore a plunging black sheer gown that featured a hip-high split over black hotpants. She ramped up the glam factor even further with cascading curls and red lips.
Rosie, meanwhile, opted for all white. The supermodel, who is said to be taking a break from her movie star boyfriend Jason Statham, wowed in the figure-hugging Versace number.
She teamed the dress with a pair of silver grey stilettos and a glowing tan as she posed alone.
Despite the reports, Rosie's publicist has insisted that the pair have not split. "Rosie and Jason have not split and are not on a break," they said.
"In fact, Rosie just got back from spending the weekend with Jason on the set of his new movie. They have actually never been happier."
Another model to attend the awards ceremony at Covent Garden's Royal Opera House was Jourdan Dunn, one of Cara Delevingne's closest friends.
Mum-of-one Jourdan looked glamorous in a sequin, floor-length Hugo Boss gown. The shimmering creation boasted a daring plunging neckline.