Viewers of the Late Late Show St Patrick's Day special were full of praise for two guests who became unlikely "best friends" during the programme.
Olympic gold medallist Kellie Harrington and Hollywood actor John C Reilly both wowed audiences with their incredible singing voices on Thursday night.
This week's programme was aired on Thursday rather than its usual Friday night slot to mark St Patrick's Day.
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Harrington and Reilly had earlier led proceedings at the Dublin St Patrick's Day parade where they were cheered on by 400,000 people.
Harrington, in her role as Grand Marshal, led the parade with Paralympian Ellen Keane, with Irish American Hollywood star Reilly appearing as our international guest of honour.
The pair both appeared on the Late Late Show and captured the public's imagination with both their individual performances and newfound friendship.
Viewers questioned if there was anything talented sportswoman Harrington couldn't do after she beautifully sang a verse of the song Grace.
They were also blown away by Reilly's rendition of Raglan Road and took to social media to praise both guests as "national treasures".
One person said: "Did Kelly Harrington and John C Reilly just become best friends? #latelate #LateLateShow."
A second commented: "Just in total awe of how fabulous Kellie Harrington and John C. Reilly’s singing was. A fantastic way to start the show! #LateLateShow #StPatricksDay #LateLate."
A third said: "Ah lads between @Kelly64kg singing with such heart followed by John C Reilly's fab voice.. brill & they've obviously had a brilliant day while bringing joy to so many others. Simply magic #latelate #LateLateShow #StPatricksDay."
A fourth added: "Just when you think Kellie Harrington couldn’t become any more of a legend. Is there anything that lady can’t do?! #LateLateShow #latelate."
A fifth wrote: "On top of everything else, Kellie Harrington is a lovely singer. What an absolute star. #LateLateShow #LateLate."
Someone else said: "Can we have John C Reilly on @RTELateLateShow every week? Legend! #LateLateShow #latelate."
Another person added: "John C. Reilly is low-key one of the most talented people in Hollywood."
While one viewer commented: "After seeing this, I wouldn't mind a whole album of classic Irish ballads from John C. Reilly now."
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