Article continues below advertisementHilary Duff is cranking up the heat with a risqué new track that's already being hailed as the "song of the year." The 38-year-old pop star shared a snippet of her single from the upcoming album, Luck... Or Something, in an Instagram post on Wednesday, January 7.Article continues below advertisementSource: MEGAHilary Duff previewed her new song before the album's release.