Maddie Ziegler became well-known after joining "Dance Moms" and being a part of the Abby Lee Dance Company (ALDC) Junior Elite Team when she was just 8-years-old, but her performance in Sia's mega-hit "Chandelier" music video catapulted her to stardom. After their highly-successful collaboration, the Australian singer and the young dancer formed a special bond. As a matter of fact, the duo are so close that they even share the same toothbrush.

Maddie has added model, actress and businesswoman to her already impressive resume after leaving "Dance Moms." Now, the young teen is currently taking a quick break after joining Sia's recently concluded concert.

With extra time on her hands, the 14-year-old "Ballerina" star played a fun and popular game called "Never Have I Ever" and revealed something really shocking.

Maddie Ziegler gets a little too close and comfortable with Sia?

Talking to the person hosting the "Never Have I Ever" game, the former "Dance Moms" star said, "Okay, I guess I can just tell you," she started, while looking clearly embarrassed with what she was going to reveal, "I used Sia's toothbrush," the teen admitted. Maddie Ziegler then explained how this toothbrush-sharing incident happened: "We were on a tour bus, and it was the day of my birthday and I forgot mine [toothbrush]," the popular dancer said before adding, "that's what friends are for.

True friends."

Maddie Ziegler reveals Sia is like family to her

It's no surprise that Maddie feels comfortable sharing something (like a toothbrush) with Sia since the duo became really close after their very first collaboration. The "Dance Moms" alum even appeared in a couple of the 41-year-old singer and songwriter's music videos after the success of "Chandelier."

Maddie Ziegler has previously shared that Sia is like family to her now and revealed that they have a special connection despite their huge age gap.

"She is like a family member to me. She's literally one of my best friends," the former "Dance Moms" star told the "Morning Show," as reported by Daily Mail. "Even though there's an age difference, we're so close. I'm so thankful for her."