By GEORGINA LITTLEJOHN
All I Want For Christmas: Mariah Carey performs her festive classic as she joins in the celebrations at Disney World, Florida
It's one of the most well-known Christmas songs of recent times that has been described as a 'holiday standard'.
And being heavily pregnant with twins wasn't going to stop Mariah Carey belting out her Yuletide classic 'All I Want For Christmas Is You' for a delighted audience at Disney World this weekend.
The pop star looked happy and glowing as she performed at the theme park in Orlando, Florida for the resort's Christmas celebrations.
Mariah, 40, who is expecting twins next Spring, sang her classic Christmas song in a cute red dress with white trim.
Then she disappeared and came back on stage in a black dress to to sing her new holiday single 'Oh Santa,' which is currently at No. 1 in the US charts.
Cinderella's Castle: Mariah comes out to perform against the famous Disney backdrop
But while she was in Orlando singing her heart out, her husband Nick Cannon was on the other side of the States, hosting the Christmas celebrations from Disney Land in Los Angeles.
Thankfully the couple did get to spend the holidays together as they had pre-recorded the shows - which were broadcast this weekend - earlier this month.
Glowing: Pregnancy is clearly suiting Mariah who beamed for her audience as she came on stage
Christmas cheer: Mariah came back on stage in a black dress to wrap up the concert
Mariah was joined at the Christmas Day Parade in Orlando - which was hosted in by American Idol presenter Ryan Seacrest - by singer Selena Gomez.
Performing in a white dress, Selena, 18, sent the crowd into a frenzy as she performed 'Winter Wonderland'.
Hello, Disney! Selena Gomez dressed all in white with festive red shoes as she came on stage to sing Winter Wonderland
Other artists performing at the event included this year's American Idol winner Lee DeWyze who sang Little Drummer Boy and Glee's Amber Riley.
It was the 27th annual parade at the Disney resorts and it travels along the park's Main Street with lots of famous characters including Mickey Mouse and Donald Duck.
Live from LA: While wife Mariah performed in Florida, Nick Cannon hosted the event at Disney Land in California
From Idol to Main Street: Ryan Seacrest reports from Disney World's parade
Mariah Carey - All I Want For Christmas is you (Disney Christmas Parade 2010)
source: dailymail