"Hairspray" star Nikki Blonsky will play the lead in ABC Family's upcoming series "Huge."
Two TV stars' offspring, David Hasselhoff's daughter Hayley and James Eckhouse's son Zander, also have been tapped to star on the series, along with Andrew Caldwell.
"Huge," based on a book by Sasha Paley, was written by "My So-Called Life" creator Winnie Holzman and her daughter, Savannah Dooley.
Described as "Glee" meets "Ugly Betty," the series revolves around six teens and the staff at Wellness Canyon, a weight-loss camp. It centers on Will (Blonsky), a funny, opinionated overweight girl sent to the camp by her wealthy parents who own a chain of fitness centers, and Amber (Hasselhoff), a curvy teen who is the skinniest and hottest girl at the camp but who considers herself too heavy.
Eckhouse, repped by Main Title and attorney Arik Betesh, will play a college student working as an assistant fitness counselor who becomes attracted to Amber. Caldwell will play the leader of the thinner, popular boys among the overweight camp population.
Also cast as teens attending the camp are Harvey Guillen, Ari Stidham and Ashley Holliday.
Blonsky is repped by Innovative.
"Huge," which received a direct-to-series 10-episode order, is slated to start production in April for a premiere in late June.
Alloy Entertainment is producing, with Leslie Morgenstein and Bob Levy executive producing. Holzman will serve as an executive producer on the pilot, segueing into a consulting role for the rest of the episodes. Dooley will be a producer on the series.