The absolutely stunning blonde proved that she's one of the most fashion-savvy celebs as she flaunted her undeniably perfect pins in a patterned long sleeved mini dress that boasted a flippy, layered hem and a bouquet of embroidered flowers across the chest.
Ash was spotted at the event alongside pals Olivia Cox, Jodie Kidd and Radio 1 DJ Edith Bowman but it's safe to say she stole the show in the thigh-grazing, Just Cavalli number.
When it came to her enviable locks Ashley went for the lived-in, rock chick look to detract from the super-sweet nature of her floral frock and chucked out the straighteners in favour of dishevelled waves which she wore in an effortless side parting.
Of course, no look these days is complete without a swipe of scarlet lipstick - just ask Selena Gomez and Dakota Johnson! Even though Ashley emerged from London's swanky Ham Yard hotel in the early hours, she looked just as glam as she did on arrival.
A glittery gold clutch bag and a pair of pointed courts were all Ms. James needed to give her ensemble an autumnal update.
Nailed it, right?
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!