Duff released “Mature” on Friday, Nov. 7, marking the actress-singer’s first material since 2016 when she dropped the single, “Little Lies.” “Mature” was co-written by Duff’s husband, producer Matthew Koma, and Halsey collaborator Madison Love, Billboard reported.

“Mature” marks Duff’s first new music since 2015’s Breathe In, Breathe Out, which the singer worked on with her now-husband Matthew Koma. Koma, a songwriter and producer who releases music under the name Winnetka Bowling League, also co-wrote “Mature” along with Duff and Madison Love.

In a Wednesday, Nov. 5 interview with Jake Shane on 'Therapuss,' Hilary Duff revealed she doesn't remember recording "What Dreams Are Made of" from 'The Lizzie McGuire Movie.' The movie and song were released in 2003.