The episode is to see the singer whose full name is Rory Charles Graham duped into performing at Albert Square's carol concert fundraiser, "as a wedding gift to Mick and Janine", according to the soap.
"After bumping into a familiar face in The Queen Vic, Rocky manages to persuade the award-winning musician to perform at the carol concert fundraiser under the twinkling lights of Albert Square as a wedding gift to Janine and Mick", they said.
Speaking of this cameo appearance, Rag'n'Bone Man said, "In the words of Gabrielle, 'dreams can come true'. Thanks to everyone at EastEnders for one of the best days of my life!".
On this episode, EastEnders executive producer Chris Clenshaw also added, "We have always known Rag'n'Bone Man is a huge EastEnders fan, so when an opportunity came up in one of our stories it was the perfect moment for us to ask him to not only appear but also perform in Albert Square".
"We are all thrilled that he said yes, and we hope the audience enjoy the special Christmas treat, as much as everyone at EastEnders enjoyed having Rag'n'Bone Man in Walford".
You can catch that episode on RTÉ One and BBC One tonight at 8pm.
