Mariah Carey can still hit those high notes!

The American Idol judge hit the stage in New York to perform her classic holiday hit "All I Want For Christmas Is You."

The 42-year-old songstress Tweeted:

    “Walking to the stage to perform at Rock center. Let the festivities begin! Thx 2 all the lambs who are braving the temps here! LYM!!!”

Mariah is currently plugging her new holiday single “Christmas Time Is In The Air Again."

Ho, ho, ho!