As we already know, Westlife will be on The Late Late Show on Friday night.
The band will be performing a number of songs, including their newest single, and will chat to host Ryan Tubridy about their pop career and stunning comeback.
A select number of lucky fans will be in the audience – after over 10,000 fans applied for the chance to watch them perform live in the studio, following a call out earlier this week.
Legendary singer Christy Moore will also be in studio to celebrate and reflect on 50 years in the business, and to perform some of his most beloved songs.
Ahead of stepping down from his role as Ireland rugby coach next week, Joe Schmidt will be on The Late Late Show too to look back on his time with the team.
Iconic newscaster Trevor McDonald will also join Ryan to talk about interviewing some of the most famous people in the world, from beloved statesmen like Nelson Mandela, to sitting down opposite dictators like Saddam Hussein and Colonel Gaddafi.
Trevor will be sharing how he went from from growing up impoverished on a small Caribbean island, to becoming the definitive face of the news for a generation.
And finally, to celebrate 20 years of Gift Grub, Mario Rosenstock will be bringing some of his best-known characters to life on Friday night.
Catch The Late Late Show on Friday, November 22, on RTÉ One at 9.35pm.