Former OC actress Mischa Barton attended the event in a demure, cream floor-length evening gown which featured subtle ruffles.
She wrote on Twitter ahead of the event: "On my way to #serpentine with @Rachelbakewell ! So excited...I love being in the park and particularly visit the serpentine frequently."
Barton looked pretty and demure in a cream frock
Australian singer Holly Valance turned up the glamour in a gold sequinned cocktail dress which was embellished with silver stars. She accessorised with a pair of nude Christian Louboutin peep toe heels and a gold clutch.
Valance in a shimmery gold dress
Model Amber Le Bon was stylish in a floaty forest green dress and wore her ombre hair long and loose.
Amber Le Bon looked great in a floaty, sheer green dress
Burberry model Cara Delevigne was similarly chic in a black floor-length gown, which she wore her long locks in a top bun.
Delevigne in floor-length black
Actress Jaime Winstone wore a strappy LBD to the event, while Donna Air was daring in a shimmering red shorts suit.
Jaime Winstone in a simple LBD and gold T-bar heels
Donna Air pushed out the style boat in a red and orange shorts suit
Nancy Dell Olio channelled Cleopatra in an unusual silver headdress, which she paired with a white mini-dress.
Dell Olio channelled her inner Cleopatra
