Video: Rihanna Joins Jay-z For Surprise Performance

While the Yahoo "Wireless Festival" neared its end last night after three days in London, Rihanna surprised fans as she joined the stage with headliner Jay-z . 

Watch as Jay-z and Rihanna cover 'Run this town' with assistance from the fans. 

Oh LONDON

rimmel london has some dope products for summer right now im crushin on the lasting finish cover up plus it's transfer resistent so I wont be scared to hug my boyfriend when he wears a white shirt. Me and my roomie stood in CVS forever painting our nails trying on eye make-up (I dont think this is allowed) but how else am I suppose to know ill be happy with this product. Well I was and almost brought the whole collection plus grabbed a whole lotta coupons a 1$ off each item Woop wOOp.