The Wireless Festival drew to a star-studded close last night (July 14) as Rihanna joined Jay-Z and Justin Timberlake on stage.

The two US men were headlining the final day of the London festival, which was held this year at the Olympic Park.

Their collaborative set saw the duo run through some of their respective hits, whilst they also performed new Jay-Z track 'Holy Grail' together.

Fans were in for a surprise, however, when Rihanna joined the musicians to play the track 'Run This Town'.

The 'Diamonds' star was in the UK after performing at Scotland's T in the Park on Saturday (July 13), where she headlined the main stage.

The singer meanwhile also showed off a striking diamond teeth grill in a photo on Instagram, which can be seen below.