11/06/2012 02:52 BST | Updated 10/08/2012 06:12 BST

Katy Perry Goes Bowling With Boyfriend Robert Ackroyd

Katy Perry celebrated her triumphant set at a London pop concert on Saturday night by aiming for strikes at a bowling alley with her rocker boyfriend Robert Ackroyd.

The I Kissed a Girl hitmaker reportedly met the Florence + the Machine guitarist at California's Coachella festival in April and the Brit has since become her first partner since her split from husband Russell Brand last year.

She closed the Capital FM Summertime Ball at London's Wembley Stadium with a high-energy performance on Saturday - and then went bowling with Ackroyd.

During her set, Perry hit the stage in a retro two-piece black and white polka-dot outfit and matching bowling shoes, and sang hits like Part of Me and an acoustic version of The One That Got Away.

Other performers at the Summertime Ball included Justin Bieber, Jessie J, Coldplay and Cheryl Cole