Party over here!

Zayn Malik, Louis Tomlinson, Liam Payne & Danielle Peazer, Marvin Humes & Rochelle Wiseman, Aston Merrygold - and we assume Harry Styles and the rest of JLS - went out to celebrate Niall Horan's 18th birthday in the swanky clubs of London last night.

Liam and Danielle left looking very sweet hand in hand, as did Marvelle - with a little Aston face popping up in between them. Louis seemed to be followed around by a gorgeous gal with legs that literally went all the way up to her chin, Zayn was looking dapper in a suit and tie, and Niall was the centre of attention!

Click next for the rest of the pics from the night and be jealous of everyone's lives...