Derry Girls star Siobhán McSweeney is also joining Ryan Tubridy.
Michael Bublé is among the guests confirmed for this week's Late Late show.
The Canadian singer will perform new music live in studio.
Derry Girls star Siobhán McSweeney, boxing legend Barry McGuigan and former journalist Charlie Bird will also be making an appearance on tomorrow night's show.
Michael English will perform a song written exclusively to support the Climb with Charlie.
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