ContactMusic — Katy Perry is reportedly ignoring John Mayer.The 'Dark Horse' singer, who split from the singer-songwriter, 36, in February, refuses to respond to... more info

MTV.co.uk News — K-Pez works up a sweat in the kitchen in the promo for her latest single... more info

MTV.com News — Let everyone eat cake. By Brenna Ehrlich more info

ContactMusic — Singer Katy Perry and reality Tv star-turned-fashion designer Nicole Richie have thrown their support behind self-help author Marianne Williamson's... more info

ContactMusic — Katy Perry is reportedly ''doing really good'' following her split from John Mayer earlier this year. The 'Dark Horse' hitmaker was devastated when... more info

MTV.co.uk News — One Direction, Pharrell and Justin Timberlake are also nominated... more info

Reuters — NEW YORK (Reuters) - American alternative rock group Imagine Dragons and New Zealand singer Lorde were named Billboard Music Award finalists in 12 categories each, followed by singer Justin Timberlake with 11 and pop star Katy Perry with 10, organize... more info

MTV.com News — From Rihanna to Miley Cyrus, a celeb hair transformation means a lot more than a haircut. By Sidney Madden more info

MTV.co.uk News — Star is no longer a 'Dark Horse' as she shows off her new bright locks on Instagram... more info

MTV.com News — 'Dark Horse' singer debuts bold new 'do just in time for Spring. By Emily Blake more info