The heartthrob singer, 19, who finished in fourth place with Union J on X Factor, was left unable to perform after suffering a mystery accident.
He tweeted: "So sorry to everyone in Ireland. I have had an accident so we won't be able to perform tomorrow so our gigs have been pulled. Sorry, George."
George added: "I'm fine just had an accident and won't be able to perform tomorrow, I will be fine in a week or so :)."
His band mates were quick to tweet their well wishes for poorly George (or Georgey Porgey as they call him) as well.
JJ tweeted, "Get some rest georgey porgey love you bro. Get well soon", while Josh told fans: "Glad George is recovering :) Sorry once again Derry tonight. We will come and reschedule as soon as we can. Hope you all understand!"
George's fellow X Factor finalist and close friend Ella Henderson also tweeted, saying: "Wishing & sending all my love to u Georgey x x get better soon :) x @UnionJworld."
So what happened to George? The Union J boys are keeping tight-lipped for now, except to say he's on the mend.
Their management tweeted: "To all those asking George is fine, just a small accident. Won't be performing at the show tmrw, but will be back in a week or so! The boys will let you know what gigs are rescheduled. Everything is fine and George will be back on the road as soon as you know it."
Get well soon, George!
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Watch Union J performing 'Love Story' on X Factor below (and send a good wish to George!):