The 13-year-old So You Think You Can Dance: The Next Generation judge has appeared in Sia‘s videos for “Big Girls Cry,” “Elastic Heart” and “Chandelier” and performed with her at the 2015 Grammy Awards.
“I’ve learned a lot from her,” Maddie told PeopleStyle. “She’s definitely helped me feel comfortable in my own skin. I always had a fear my teeth were too big, and I wanted to fix them. But she told me not to. She said, ‘It’s what makes you you.’ She always reminds me to stay true to myself.”
Maddie added, “I can’t be perfect at everything and I don’t want to look perfect because I learned to be comfortable and flaws are actually beautiful. Even though she might be older than me, we are best friends. Sometimes she is like one of my closest friends, and I know I’m 13, so it’s really weird to say, but it’s true.”