Mariah Carey teases new Christmas tune

Today on Twitter, Mariah Carey roused up her 5 million followers by insinuating that she's got a Christmas gift to the fans on the way. No, it's not dem babies - and she says it's not what we're thinking of, either, so that probably rules out the leaked "All I Want for Christmas Is You" duet with Justin Bieber. "Listening to a very festive suprise (not what you're thinking) but ooo lovers of music, especially Christmas." So what does Mariah have up her sleeve, exactly? We can't wait to find out! (Pop Crush)