CELTIC superfan Rod Stewart has performed an Irish folk song during his Las Vegas show.

The singer, 73, sang Grace during the first night of his residency in The Caesars Palace Colosseum on June 12. 

The star has been performing his hits in Vegas since 2011 and his current run is due to end on June 30.

The song was written about Grace Gifford who was active in the Republican movement.

She married her fiancé Joseph Plunkett in Kilmainham Gaol only a few hours before he was executed for his part in the 1916 Easter Rising.

The song is often sang by Celtic supporters group The Green Brigade at Parkhead.

It was also covered by The Wolfe Tones.

Last year, Rod's daughter Ruby sang the song with her band The Sisterhood during a Lisbon Lions tribute show at the SSE Hydro.

Watch the moment here:

Watch his daughter perform the track here: