Blake went for a classic dress and Elle and Alexa showed off their trademark quirky styles.
But who do you think looked best?
Blake went for a silver silk halterneck dress with pale pink panels.
She teamed the midi-length gown with metallic silver heels and what looks like a lot of fancy diamond rings.
She wore her hair glossy with a natural looking wave and a pop of pink lipgloss.
Elle Fanning opted for a classic Chanel style black and white outfit.
Her black velvet dress has a cute white Peter Pan collar.
She wore her hair plaited down one side and added a bowler hat.
Alexa Chung wore a pretty white skater skirt dress with floral detail.
She added silver glitter heels for a real party girl llook.
Alexa wore smoky eye makeup and an orangey tinted lipstick.
So who do you think looked best? Comments please!