The one time Bond girl turned heads in a vivid red two-piece outfit, which showed off her toned abs and lengthy pins.
She paired the jacquard crop top and asymmetric trumpet hem skirt by Prabal Gurung with matching ankle tie sandals and diamond chandelier earrings.
The British actress hit headlines earlier this week when she was spotted with her new man.
The ‘St Trinians’ star was pictured kissing French director Franklin Ohanessian as they took in a tennis game at Wimbledon.
She told the Daily Mail, “Franklin doesn’t like or really want to be in the limelight, but yes, we are together. We met when I was filming ‘The Voices’ and hit it off. We speak in French and I regularly commute to Paris to be with him.”
Gemma split from her husband, Italian businessman Stefano Catelli, last year after three years of marriage.
Also in attendance at last night's star studded event were Bradley Cooper, Keira Knightley, Lily Allen, Alexa Chung and Pharell Williams.