The singer shut down an area of Gordon Ramsay’s Pub in Sin City so he could celebrate "a very successful" run at Caesars Palace run with fans, and offered to buy anyone who showed up wearing a Celtic shirt "a beer".

The invite went out via Twitter on Friday (14Aug15), and Stewart was swarmed by Celtic fans on Sunday after wrapping up his four-year Vegas residency.

Caesar’s Palace officials tweeted a video of Stewart celebrating with the soccer fans, who also took to social media to post photos of themselves with the generous rock star.