Dolly Parton won't be the only country star on the set of her Coat of Many Colors TV movie. Jennifer Nettles has been selected to play Parton's mother, Avie Lee Parton, in the film.

The Hollywood Reporter reports that, in addition to Nettles, Gerald McRaney and Ricky Schroder -- the latter of whom directed and acted in Brad Paisley and Alison Krauss' "Whiskey Lullaby" music video -- have been cast in the roles of Parton's grandfather and father, respectively.

Nettles, formerly part of the duo Sugarlandstarred as Roxie Hart in the musical Chicago on Broadway earlier this year. She recently released a new solo single, "Sugar," but separated from her record label, Universal Music Group, shortly thereafter.

In mid-July, 8-year-old Alyvia Lind was revealed as the actress selected to play Parton in Coat of Many Colors. The movie is named after a song that Parton released in 1971 and is based on the country legend's true life story: Parton grew up as one of 12 children living in poverty in East Tennessee, and her mother made a real-life "coat of many colors" for her from rags that someone had donated to the family. The future star loved the coat, but it earned her ridicule from her classmates.

Parton is serving as the film's executive producer, though there's no word on if she will also appear in it. Coat of Many Colors is the first in a series of TV movies based on Parton's life, stories and songs that she will co-produce for NBC. An air date has not yet been announced.