Katy Perry brought the iTunes Festival to a rousing close on Monday evening when she performed a string of hits and previewed tracks from forthcoming album Prism But while her lively performance had a packed Camden Roundhouse rocking, the 28-year-old’s racy outfit caused almost as much of a stir as her music.
Indeed, Katy took to the stage in a black leather corset, tartan miniskirt and fishnet tights before launching into a performance of Walking on Air Joined by a troupe of backing dancers sporting tight denim hotpants, the hit-maker worked her way through California Gurls, Teenage Dream and breakout hit I Kissed a Girl before introducing a series of tracks from her new long-player.
Thank you London. Are you ready for some more Prism previews?’ she asked the audience before performing forthcoming song Dark Horse Speaking about the track during a recent interview with MTV, she said: It’s a love song and it’s different from Roar – it’s not eighth-notey. 
I think it’s a universal love song that everyone’s going to be able to relate to no matter the age, no matter male or female. It’s my favourite song off the record The tartan mini-skirt was eventually scrapped in favour of a sheer dress while she cavorted with her male dancer during Part of Me.
Other tracks to be performed during her 45-minute set included Firework, which she dedicated to ‘anyone who has ever felt less Katy’s appearance at the iTunes Festival officially closes the month-long event, which has taken in performances from artists as diverse as Justin Timberlake, Jessie J, Arctic Monkeys, Haim and Sir Elton John since.
it kicked off with a divisive opening night show from Lady GaGa on September 1 The singer is currently dating John Mayer – about whom she made some bold claims during an interview with Billboard magazine.
He literally is a genius, as is evident from his songwriting,’ she claimed I always tell him, “Darling, you know I’m going to have to give your mind to science after you’ve passed, because we’re going to have to understand how all these sparks work.
The singer is surrounded by hunky backing dancers as she performs another one of her hits Katy is in full flow as she brings the iTunes Festival to a close.
Source: Dailymail