Article continues below advertisementHilary Duff is back, and fans could not be more thrilled! The 38-year-old actress unveiled her new single "Mature" on Thursday, November 6, after a 10-year hiatus from music.Article continues below advertisementReleasing the upbeat track alongside a vibrant music video, Duff teased the arrival of her first original song in over a decade earlier this week. While the lyrics initially appear to be a playful exchange between an older woman and a younger rival vying for the same man, Duff clarified in a press release that the song holds deeper meaning for her.