How to look hot at the office Christmas party while still projecting that give-me-a-promotion gravitas? Step forward, party trousers.

Alexa Chung (right) Instagrammed a pic of herself keeping things demure in black Vilshenko ankle swingers, which she paired with plaits (cute!) and sleek, pointed black courts for the launch her new Nails Inc collection at Selfridges. Meanwhile, over at the launch of private members' club La Maison Rémy Martin, Naomie Harris went all out in some Alexander McQueen trews with a neon-red thick hem, teamed with elegant stilettos and a fluffy clutch (strong). The long and cropped of it is go for a kick-flare ankle grazer, pair with strappy heels and voila! You're now super-chic! : )

Actually, while we're talking party dressing, see what our girl crush Billie JD Porter rocks of an evening here...

See more fashion news