Former Taoiseach Bertie Ahern will be one of the guests chatting to Ryan Tubridy.
The Good Friday Agreement will feature strongly on tonight's Late Late Show.
Former Taoiseach Bertie Ahern will share his memories of the historic day.
Nicholas Trimble, the son of former Northern Ireland First Minister David Trimble, will speak of his father's legacy.
Tullamore Artist Shane Gillen's collection of hand drawn portraits commemorating its signatories will also feature.
He says the idea for the project started when he was commissioned to do a portrait of John Hume:
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