Just when we thought our favorite Christmas song (“All I Want for Christmas is You” by the diva-licious Mariah Carey) couldn’t possibly get any better, Jimmy Fallon went and upgraded it. We’re obsessing over this version featuring Mariah, Jimmy, The Roots, and some seriously adorable children. Check it out – you’ll be in the market for a children’s xylophone and a sock monkey winter hat in no time!

xx, L*SPACE