X Factor contestants Andrea Faustini, Lauren Platt, Fleur East and Only The Young were among the stars who attended a special sing-along screening of Disney's Frozen at the Royal Albert Hall tonight.
Celebrities including Amanda Holden and Sinitta brought their children to join in the fun at the event held to launch Disney's Have a go at Let It Go campaign - challenging fans of the award-winning movie to upload their version of the song Let it Go to Facebook.
Guests walked a snowflake-covered carpet where they were greeted by two live reindeer and serenaded by a choir singing Let It Go.
Faustini, who was seeing Frozen for the first time, admitted being tipped to win The X Factor from such an early stage had its drawbacks.
He said: "Obviously it's a lot of pressure but at the same time I'm having the time of my life, so I just want to enjoy this experience, without thinking about anything.
"It's crazy, I just love it, because everything is unexpected and beautiful.
"I just try to try my hardest and I think it's good."
Only The Young's Mike, Betsy Blue and Charlie were there minus bandmate Parisa, who was visiting a sick relative.
But the rest of the band admitted they were really excited as they are big fans of the film and treated fans to a rendition of the theme song.
East, 27, said how pleased she had been to be told by Simon Cowell she is a "contender" after last week's performance.
She said: "It's the first time anyone has said that to me on the show, so it was amazing. It's just given me that little bit more confidence."
She added: "There is a lot of pressure. I'm trying not to think about that. I'm just trying to focus on my performance each week at a time."