Maddie Ziegler and Sia are real-life BFFs. “The Insider With Yahoo” caught up with the 13-year-old dancer on Wednesday night at the Industry Dance Awards and she dished on what’s beneath the singer’s famous mops. “A beautiful, loving, caring face,” she said. “People are always like, ‘Is she pretty? Is she ugly?’ I’m like, ‘She’s gorgeous!’ And it’s not just on the outside but on the inside too.” Maddie first made a name for herself on Lifetime’s reality show, “Dance Moms,” but it was her impressive moves in Sia’s “Chandelier” music video that shot her to fame. Now the teen is gearing up to hit the road for the songbird’s “Nostalgic for the Present” tour and she couldn’t be more excited. “I’m so honored to be dancing with her for like six weeks,” she said. “Sia’s like my second mom. She’s like a best friend to me.” Check out the video to hear what Maddie had to say about slipping into those wigs on stage, and tune in to “The Insider With Yahoo” on TV tonight to see more from the Industry Dance Awards.