‘Dance Moms' alum Maddie Ziegler joins Sia's North America tour

"Dance Moms" alum Maddie Ziegler recently announced that she will be joining Sia in the latter's upcoming North America tour.

"I'm SO excited and grateful to be joining @siathisisacting for the #NostalgicForThePresentTour and perform across North America," Ziegler wrote alongside a photo of herself in one of Sia's music videos.

Throughout the recent years, Ziegler and Sia have worked together in at least four music videos for the latter's songs. This includes "Chandelier," "Elastic Heart," "Big Girls Cry" and "Cheap Thrills."

Last year, Ziegler also announced that she will be working with Sia in an upcoming movie entitled "Sister." As of late, the filming for the film hasn't started and no other details about it have been released.

Meanwhile, Ziegler and Sia have gushed over each other during interviews and both artists have called each other a "wonderful friend."

While speaking with The Cut, Ziegler shared that Sia was the one who taught her that being perfect all the time isn't a very good idea.

"I don't think Sia likes everything to be perfect. If my foot isn't totally pointed, she doesn't care. I can be free with my emotion, with my face, with the choreography... If enough is enough, it's enough. If you're doing something you really don't want to do, just say no. She doesn't want me to be unhappy," she said.

In other news, Ziegler also spoke with Entertainment Tonight last March to say that Sia is a very sweet and lovable person.

"She's literally like the sweetest person ever. I feel like I'm just so comfortable with her every time I'm with her, and I never feel like I'm hanging out with a celebrity. You would never get that she is a celebrity if you don't actually know who she is. She's a humble person and so caring, and she cooks for me. She's such an amazing person," she said.

Sia's Nostalgic for the Present tour will start on Sept. 29 and will go on until Nov. 6.

 I’m SO excited and grateful to be joining @siathisisacting for the #NostalgicForThePresentTour and perform across North America✨