Vernon Kay is to host a new TV show - Home For The Holidays.
The Channel 4 programme will see a soon-to-be-married couple bring their extended families together for the first time to see if they can live with each other 24 hours a day for a whole week.
If they survive the week in the live Christmas show, they could win a up to half a million pounds.
Home For The Holidays will be hosted live each night by All Star Family Fortunes host Vernon.
He said: "This is going to be the perfect show to help build up the excitement of the festive season. It's a whole lot of fun as we try and give away half a million pounds.
"I'm also really pleased to be going back to Channel 4 where I had almost seven years of pure joy working on T4. I cannot wait."
The family will need to live together, put up with each other and bond in a "magical Christmas country manor house which is not quite what it seems".
Executive producer Will Macdonald said: "Christmas and family is never quite the Bing Crosby-inspired combination we all dream of.
"Anyone, like Wizzard, who wishes It Could Be Christmas Every Day should watch this show - they may want to be careful what they wish for."