The blonde bombshell stopped by the Kate Moss at The Savoy photo exhibition in the West End which was held in celebration of the supermodel's 40th birthday.
Championing the matchy-matchy trend, Ashley wore a mosaic print T-shirt with black sleeves teamed with ankle-grazing trousers.
She let her statement co-ords do all the talking by adding a simple pair of black ankle boots plus a mock-croc clutch.
The model - who is dating rugby player Ugo Monye - also kept a biker jacket on hand to help ward off the winter chills.
Ashley flaunted her natural beauty with fuss free make-up, simply adding a touch of eyeliner, mascara and nude gloss.
The exhibition showcased 12 original photographs of Kate Moss taken by a host of famous photographers. Guests also participated in a live auction, with all proceeds going to The Shooting Star Children's Hospice CHASE.
Ashley was joined at the event by SW3 pals Spencer Matthews, Hugo Taylor and Kimberley Garner, plus model Sophie Anderton and ex-All Saints singer Natalie Appleton.
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