In the age of Spotify and Apple Music, the debate over the highest selling Christmas song of all time has never been more interesting — or more complicated. Bing Crosby's "White Christmas" still sits at the top with an estimated 50 million physical copies sold, a number no digital release has come close to matching. Meanwhile, Mariah Carey's "All I Want for Christmas Is You" has quietly racked up over 4 million digital downloads and billions of streams, making her the undisputed queen of the modern holiday charts. So who's actually winning — the vinyl legend or the streaming powerhouse? We break down the top selling Christmas songs of all time to find out which classics have earned their place and which ones are simply coasting on nostalgia.