The superstar is currently in the process of developing an as-yet-untitled project alongside her close friend and filmmaker Brett Ratner.
Producer Jonathan Shestack confirmed to Entertainment Weekly that New Line Cinema will be developing the untitled project.
He said: "It's a little bit about how music can take you back in time. It will be everything you hope a Christmas movie with Mariah Carey would be."
Will Mariah star in it? Or will she be pulling the strings from behind the camera? And will her amazing back catalogue of songs feature in it?
There's so many questions to ask, but seriously, this could be amazing!
Now we all know that it isn't really Christmas without Mariah's song 'All I Want For Christmas Is You' blaring out in the background, so we reckon this festive movie could be all sorts of magical.
'All I Want For Christmas Is You', which appeared on Mariah's 1994 Merry Christmas album, has sold more than 14 million copies to date. Impressive!
Not only that, but Christmas really is Mariah's season. Every year Mariah performs a string of Christmas-themed concerts in the States to get everyone in the holiday spirit.
We know it's May, but just in case you were feeling a little Christmassy...
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