Thanksgiving is over, which means it's officially Christmastime! No holiday kickoff would be complete without festive tunes — and they're even better when sung by some of our favorite pop artists. You might have heard them a million times before (no matter what anyone says, Mariah Carey's "All I Want For Christmas Is You" is as important as the tree), or they might be part of the newest crop of albums to come out this year. Either way, we've put together our ultimate holiday pop playlist. Enjoy it after the jump.