Kelly Osbourne has been left with bad sunburn after overdoing the rays.

The 28-year-old star has been out and about with radio DJ Nick Grimshaw and their singer/songwriter friend Remi Nicole in Los Angeles, and she took to Twitter to reveal her bright red back and joked she made a grave error staying out in the sunshine for such a long time.

In a message accompanying the image, she wrote: ''#ImSmart! (sic)''

The 'Fashion Police' star has been having fun with Nick - whose nickname is Grimmers - and Remi while the pair have been in the US to attend the star-studded Coachella music festival in California, but the Radio 1 DJ didn't seem too keen on some of the food he was served in the Sunshine State.

Kelly took to her Instagram account to reveal Nick's shocked face after being presented with some unappetising-looking thickly cut French toast, writing: ''I think this is the last time grimmers will ever order French toast in American (@grimmers @reminicole ) (sic)''

While Nick was left disappointed with his food, Kelly was left feeling like a ''diva'' on Saturday (13.04.13) after receiving a free upgrade to the Presidential Suite of a hotel she was staying at.

She tweeted: ''feel like such a #diva I got a complimentary upgrade to the Presidential Suite & 90 min massage because they messed up my reservation #Sick

''This sort of thing never happens to me I always end up with the room with pubic hair in the bathroom & a broken TV! Im in #heaven

''I think it was a situation of this room or nothing I have never stayed in a room this big in my life am i wrong 2 say i dont like it #ToMuch (sic)''