Mark Ronson and Pharrell Williams have gone head-to-head in a DJ battle - with N.E.R.D. frontman Williams walking away with the crown.
The stars hit the decks at the launch of Bathing Ape, a new shop in London, held at nightclub 24.
Their sets ended in a competition to see who was a better DJ.
A party-goer tells Britain's The People, "Both Pharrell and Mark took it very seriously."