Photo: Guess who's Christmas caroling with Britney ...

TV personality Ellen DeGeneres and Britney Spears. Photo / AP

Jingle Belles: Guess which TV personality joined comeback singer Britney Spears for a spot of Christmas caroling in Los Angeles this week...

Pictured: TV personality Ellen DeGeneres and Britney pop out for a spot of Christmas caroling during a segment from The Ellen DeGeneres Show.