Mariah Carey has an early Christmas present for us all. The 40-year-old singer, who's currently expecting her first child with husband Nick Cannon, debuted the official video for her Yuletide smash, "Oh Santa," via Access Hollywood today, bestowing us with a preliminary burst of holiday cheer that will no doubt carry us through as we brace for the hectic run-up to all of the gift-buying, traveling and relative-enduring that we'll all be partaking in during the coming months. Dig into the video below for a tasty and refreshing dose of visual eggnog. What do you think? Let us know in the comment...