Former glamour model Katie attended the concert with close friend Michelle Heaton and she was more than happy to mingle with the lads from 911 after the show!
Not only did Katie have her picture taken with Jimmy Constable, a photo has now emerged of the star with lead singer Lee Brennan and Celebrity Juice host Keith Lemon.
Lee shared the snap with his Twitter fans last night, telling followers: "Me, the main man @lemontwittor & @MissKatiePrice at the after party last night in London #BigReunionBoyBandTour."
In the photo, Katie is showing off her newly-dyed black hair, which she unveiled during a trip to the Isle Of Wight on Friday.
However, keen to point out that the look may not be here to stay, Katie has now hinted that she may have only dyed her locks to promote hair colour remover ColourBe4, which she is the face of.
"When I'm ready I'll be using @colourb4 to go back to my original hair colour with no fuss! #backtoblack," Katie tweeted.
Very savvy, Kate. Lord Alan Sugar would be impressed!
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