SIR Rod Stewart has been forced to cancel a major show with fans left concerned for his health.
The rocker, 80, was due to play at The Colosseum at Caesars Palace in Las Vegas tonight.

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Taking to social media, the Maggie May singer wrote: “I am sorry to inform you that I’m not feeling well and my show tonight at The Colosseum at Caesars Palace is being rescheduled to June 10.
“Your tickets will be valid for the new date. Sir Rod.”
Fans flocked to the comments to send their well-wishes to the star following the announcement.
One wrote: “Hope you feel better soon, travelled from the UK especially to see the show tonight. Gutted is an understatement. Going home in two days, so can’t make the rescheduled date.”
Another said: “I’m here and disappointed but more concerned that you stay well.”
A third added: “You’re a legend and a treasure, so please look after yourself.”
A fourth weighed in: “We love you dude, please take a night.”
Sir Rod has dates lined up all over the world this year, including the Legends slot at Glastonbury later this month.
He recently revealed he fears he will die if he gives up touring.
He said: “I enjoy going out on tour now more than I’ve ever done at this ripe old age of 80.
“I’m doing seven concerts in Vegas and then I am everywhere around the world.
“I’m playing Athens, Germany, three nights in Buenos Aires, two nights in Rio, it goes on and on and on.
“It keeps me fit. You have got to be fit to do it.
“I would probably die if I didn’t do it. I have seen so many guys that have to give up their career and retire and they have got nothing to wake up in the morning for.
“I don’t know what they do with themselves. They must get up and go ‘What do I do today? Down the betting shop? Have a drink?’ I don’t know.”