Ryan Tubridy

Buble, one of the world's best known and beloved musicians, is top of the bill for the RTE chat show.

I can't be making a fool of myself and Buble tonight! "The talk of getting a duet together for me at some point is going. I went for a walk to get my steps in and his new album is beautiful.

As host Ryan Tubridy began the show, he introduced an Irish couple in the audience who had gotten engaged on the programme, with the help of Buble, over three ...

“And then we made the record in New York and it was a joy.” Earlier in the day, Tubridy and Buble performed a song together in a pre-recorded clip that was posted to the RTE Late Late Show Twitter page. I guess they just hadn't met him yet.” A third added: “@MichaelBuble sitting in the audience was gas to watch as it dawned on us at home. Tubridy asked the pair if they had booked a wedding singer yet, saying: “Why don’t you ask [Michael Buble], he’s sitting beside you.” At that point, the man beside them jumped up and took off his glasses and the rest of his disguise, revealing himself as Buble. The prank gave the couple the shock of their lives, leaving them almost speechless, with Ashley simply exclaiming: “Oh my god!” However, some people watching the show at home claimed to have spotted the crooner hiding in the audience before he was revealed. #latelate” Another agreed, writing: “@MichaelBuble always comes across as a genuinely lovely man #latelate” A third said: “#LateLate I like Michael Buble. He's always up for a bit of craic.” While another admitted: “Just watched my better half swooning over Michael Bublé on the #latelate” Michael Buble surprised the couple by sitting next to them in the audience wearing a disguiseWant all the latest Showbiz news direct to your inbox? Thank you for subscribing!We have more newslettersShow meRTE Late Late Show viewers were left in shock on Friday night as singer Michael Buble appeared on the chat show - as a member of the audience.