Figure skating stars Jayne Torvill and Christopher Dean will appear in Emmerdale.
The Dancing on Ice judges, who won the gold medal at the 1984 Winter Olympics, will be in a Christmas episode of the ITV1 soap.
Dean said: "It is amazing being here. We have jumped from watching Emmerdale on TV to being in a scene. From the screen to the scene. I'm loving it."
ITV said filming has taken place at a location in Leeds and will involve the pair appearing on ice.
Torvill said: "I can't wait to watch the episode that we are going to be in. It will be surreal sitting at home watching it."
The production has also teased an Emmerdale character making a festive marriage proposal in the Christmas instalment.
Emmerdale producer Laura Shaw said: "We are delighted to welcome Jayne Torvill and Christopher Dean as our very special guests to Emmerdale.
"Torvill and Dean certainly promise to bring the Christmas magic sparkle to the show."
The duo will be back as judges in the new series of Dancing on Ice next year.
Former world champion boxer Ricky Hatton, Coronation Street actress Claire Sweeney, singer Hannah Spearritt, West End star Amber Davies and Olympian Greg Rutherford are among the celebrities set to take part in 2024.
Emmerdale airs weeknights on Virgin Media One and ITV1.
Source: Press Association