Here's the line-up for Friday night's Late Late Show
A special episode.
There's a couple of Late Late Show specials each year that prove to be really popular with the public, the most obvious being the Toy Show and the Valentine's Special.
But one of the others is the Country Music Special.
Well this year it's a Late Late Show Country Music Christmas Special and features none other than musician, singer and vaccine developer Dolly Parton.
Of course the First Lady of country music will be joined by a host of other Irish country music stars.
Singers Una Healy, Cliona Hagan and Claudia Buckley will come together with a special tribute performance of a number of Dolly Parton's greatest hits.
Nathan Carter and The Three Amigos will also be among the performers on the evening.
Of course it wouldn't be a Country Music Special without Daniel O'Donnell making an appearance alongside his sister Margo.
Philomena Begley will be speaking to Ryan during the evening, and there will also be music from Trudi Lalor, Barry Kirwan, and Mike Denver.
The Late Late Show Country Music Christmas Special, Friday, 11 December, RTÉ One, 9.35pm.