The 41-year-old singer-actress is set to appear on US TV in an ABC special, Mariah Carey: Merry Christmas To You, which will air on 13 December.
The Precious star will perform at the Orpheum Theatre in Los Angeles, singing classic Christmas tunes, plus songs from her album, Merry Christmas II You.
The Grammy-award winning singer will also surprise fans by making some of their wishes come true.
Carey recently confirmed the worst-kept secret in showbiz – that she and husband Nick Cannon, 30, are expecting their first child together.