Katy Perry brought the iTunes festival in London to a close on Monday performing some of her biggest hits and newest number-one single ROAR.
The 28-year-old starlet brought the house down as she belted out her tunes wearing a tartan skirt and fishnet tights during her 45-minute-set.
Katy also chose to preview song of her new songs from her album Prism. Speaking about Dark Horse the I Kissed A Girl singer said "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."
Monday night was the last night of the month-long festival, which has featured performances by Justin Timberlake, Jessie J, Artic Monkeys, Sir Elton John and was opened on 1 September by Lady Gaga.