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Check out the 'Price Tag' singer's feline look at the Big Chill.
Jessie J made her first appearance in months at the festival after breaking her foot at the start of the summer, and she did it in style with a wild looking outfit inspired by cats.
As well as a leopard print catsuit, Jessie wore a hat featuring little pussycat ears while singing from her throne at the gig.
"The Big Chill was HOT! Thank you for going iinnnn even in the rain!!!" Jessie tweeted.
"Amazing show @kanyewest was a honour to open for you.
"Visuals, songs, performance wow! :) #thebigchill"
Jessie is preparing to release her next single 'Who's Laughing Now' on Sunday 28th August.