Former 'Harry Potter' star Emma looked to have taken style inspiration from Lady Gaga with her unusual fashion choice at the swanky event held at London's Royal Opera House.
Emma seemed to have taken style inspiration from Lady Gaga
She showed off her toned stomach with her flesh-flashing white top, and black trousers.
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But her impressive set of abs weren't the only ones on the red carpet, as Jessie J went for a revealing black boob tube and trailing skirt.
Jessie J also bared her gym-honed physique
See more pics from the event in our gallery below...