A popular U.S. television show is breaking ground by featuring the first openly transgender child as a cast member.

On Wednesday’s episode of , 8-year-old Jackson Millarker will play a transgender character who is a friend of Lily, played by Aubrey Anderson-Emmons.

US Sitcom to Feature Transgender Child

Openly transgender people have acted on TV before, notably in and Nashville, but will be the first to include an acting role for a transgender child.

US Sitcom to Feature Transgender Child

The mockumentary-style situation comedy's plot revolves around three family types, nuclear, stepfamilies and same-sex families.

US Sitcom to Feature Transgender Child

The episode, called "A Stereotypical Day," centers on Lily wanting to bring her friend Tom over for a play date. At first, Lily’s parents are proud of their daughter’s open-mindedness, but things reportedly become more complicated as the show progresses.

The episode airs as many celebrities call for more roles for transgender people.

At this year’s Emmy’s, actor Jeffrey Tambor, who plays a transgender woman on the show , called for more roles for trans people in television and movies.