Legendary country music singer-songwriter Dolly Parton will take part in Friday's Late Late Show Country Music Christmas Special, with Daniel O'Donnell, Nathan Carter, Philomena Begley and Cliona Hagan completing the line-up of stellar guests.

The First Lady of Country Music is set to speak about the profound influence of her parents on her music, and the highs and lows of her eclectic and prolific career.

As well as her endless musical achievements; the singer also donated $1 million to successful Moderna Covid-19 vaccine trial, the New England Journal of Medicine confirmed.

The 'Jolene' vocalist will also discuss writing classics including '9 to 5' and 'I Will Always Love You' as well as mentioning her enduring friendship with Irish country star Margo.

Margo will be in studio alongside her brother - Daniel O'Donnell - for a chat with Ryan Tubridy.

Some special musical performances will be taking place to complete the episode of interviews.

Una Healy, Cliona Hagan and Claudia Buckley will come together with a special tribute performance of a number of Dolly Parton's greatest hits, while Nathan Carter, The Three Amigos, Trudi Lalor, Barry Kirwan, and Mike Denver will also be belting out some epic tunes.

The Late Late Show Country Music Christmas Special airs this Friday, December 11 on RTÉ One at 9.35pm.