The singer and reality TV star, 32, showed she was proud to be British when she wore red, white and blue patterned trousers teamed with a simple black vest at the Shergar Cup Day yesterday (Aug 10).
Atomic Kitten joined Blue, D:Ream, Go West, Rick Astley and Bjorn Again at the concert which took place in the famous racing venue.
Kerry and her two bandmates Natasha Hamilton and Liz McClarnon were clearly excited to be performing together again after reforming on ITV2's The Big Reunion.
After the performance, Kerry tweeted: "Great gig! Kittens rocked!! & great banter with the lads from Blue.."
It's been a tough few months for all three Kittens... Kerry has been declared bankrupt for the second time and forced to put her wedding to fiancé George Kay on hold.
Meanwhile, Liz was left fearing for her life after being targeted by a stalker, and Natasha has recently split up from her husband of six years, Riad Erraji.
Talking about the split, Natasha told how Kerry and Liz are helping her through the heartbreak.
She said: "They're being really supportive, texting and calling me to make sure I'm okay. They can't offer any advice because they're not in my relationship but they've been there for me."
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