Coachella 2013: Nick Grimshaw, Katy Perry, Rita Ora Among The Celebrities Partying At The Festival (PICTURES)

PICTURES: Look Who's Partying At Coachella

It is official - after seeing all the celebs partying in the sun at Coachella Festival, we have come down with Coachelousy (that's the medical term for Coachella jealousy, btw).

But if you're wondering what the heck Coachella is, it's LA's version of Glastonbury, but with less mud and a celebrity guest list that's 10 times cooler.

And loads of our trendiest British stars have made the trip especially over to LA too. including Nick Grimshaw, Rita Ora, Jamie Winstone and Henry Holland have joined the likes of Katy Perry, Paris Hilton, Robert Pattinson and Kristen Stewart at the annual uber-cool festy.

Take a look who else has been rocking Coachcella...

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