The Florence + the Machine singer looked striking in a plunging, sheer black Julien MacDonald gown, while aristocrat Bruce, who is currently being romantically linked to The Voice coach Danny O'Donoghue, looked elegant in a beige halterneck floor-length dress.
The event, to commemorate the forthcoming London Olympics and celebrate British talent, showcased exclusive works of art produced by influential fashion designers and visual artists.
Other stars at the fashion festivity included Holly Valance, in a revealing black sheer dress, Princess Beatrice, Leah and Jo Wood, Matthew Williamson, Eliza Doolittle and Lydia Hearst.
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