Maddie Ziegler is officially saying goodbye to Lifetime's "Dance Moms." The 13-year-old Pittsburgh native has yet to confirm her exit, but her mother Melissa Gisoni reportedly made the announcement during a recent taping of the reality show.

Gisoni told the "Dance Moms" cast Wednesday night that Maddie would not return after Season 6 because she wanted to pursue other opportunities, Entertainment Tonight reports. Maddie's 11-year-old sister, Mackenzie Ziegler, also won't be back.

According to the outlet, Maddie is leaving to star in "Sister," a film written and directed by singer Sia. Maddie and Sia's friendship dates back to 2014, when the young Lifetime star appeared in her music video for "Chandelier." Maddie went on to perform in the videos for "Elastic Heart" and "Big Girls Cry" as well.

The plot for "Sister" hasn't been revealed yet, but it's based on a one-page story Sia wrote eight years ago.

Rumors that Maddie was leaving the Abby Lee Miller Dance Company first surfaced in December. At the time Us Weekly reported that the young dancer had "grown out of her role" and wanted to head to Hollywood. Maddie also hinted at her "Dance Moms" exit in September, telling Teen Vogue that she wanted to start focusing on other things.

"I really want to focus on acting and sing a little bit," she said. "I definitely want to do a movie or a scripted TV show."

Besides starring in Sia's "Sister," Maddie also landed a role in "Jurassic World" director Colin Trevorrow's drama "The Book of Henry." Maddie was absent from several Season 6 episodes of "Dance Moms" so she could film the movie in New York. She made her return to the reality show on episode 4.

Season 6 of "Dance Moms" airs Tuesdays at 9 p.m. EST on Lifetime.