British singer Jessie J overcame her fear of heights to perform a lofty gig in London on Tuesday (12Nov13). The Price Tag hitmaker was joined by fellow singers Conor Maynard and James Arthur to switch on the Christmas lights in the British capital's famous Oxford Street before hitting the stage to perform a small concert on the roof of the Selfridges department store. The singer later posted a snap on Instagram.com showing herself performing, revealing she faced her fears of heights to perform above the city streets. She writes, "I did it! I performed on a stage really high up! I faced my fear! Thank you so much to everyone who came out and sang with me and made it less scary!"