First trailer for Younger TV series featuring Hilary Duff

Hilary Duff back to U.S. television with the new "Younger" series that tells the story of a single mother who is encouraged to re-live your youth, because of a new job.

The singer plays Kelsey, a coworker of the protagonist who is much younger than her age, and appears in a snippet of the trailer.

Duff will also return to the music scene this year with a new album, follow up to her 2007 "Dignity."

Check out the trailer below: