Perez Hilton — Rawr it up in them clubs tents! Katy Perry celebrated Friday 13th at Coachella in fashion when she was ‘fashionably’ late to the Hennessy V.S. Presents Details @ Midnight party, after hard-core ballsin’ out at an M83 concert. Her 2 a.m. arrival... more info

People.com — Plus: More star sightings! more info

Starpulse — Celebrities of all types were out and about at Coachella over the weekend to enjoy some of music's best acts. We decided to pull photos of them all together to give you an idea of who wasn't on sta... more info

Guardian Music — Asking whether the US military's PR offensive is subsidising the entertainment industry with taxpayer dollars is not unpatrioticWho knew that an opinion about pop music video could get Fox News so worked up? Recently, I wrote that I was appalled by K... more info

Brooklyn Vegan — M83 @ Coachella 2012 (more by Dana (distortion) Yavin) It was widely reported/tweeted that Katy Perry was among those enjoying M83's set at Coachella. Anthony noticed too, and posted, "I think I saw Katy Perry dancing on midnight city yesterday... more info

ContactMusic — Rihanna headed to Coachella festival yesterday April 15 2012 to party into the wee small hours with her pop pal Katy Perry In fact judging by her Twitter account Rihanna doesnt seem to have left herself too much time for sleeping in the last 24 hours... more info

ContactMusic — Rihanna mightve been a star performer at Coachella this weekend just gone but she did more than simply turn up flounce on and head off straight after playing staying around to party with her pal Katy Perry The pair were snapped hanging out together a... more info

People.com — The singer debuts another new hue - and extensions - at the Coachella music festival over the weekend more info

Guardian Music — Katy Perry thought Radiohead's Coachella set was 'spiritual'. Watch it now and tell us what you thinkRadiohead headlined Coachella festival in California on Saturday night, with a two-hour set, complete (in the encore) with a snatch of Neil Young and... more info

411 Mania — Katy Perry's latest oddly sexy outfit... more info