For the first time in years, Maddie and Mackenzie are competing with solos against each other in the same age category. The pressure is even higher for Maddie–who, in addition to practicing her risky tap solo, has a new video with Sia premiering this week. Abby brings in celebrity guest choreographer Travis Payne to teach the girls a routine inspired by voguing, a style with which they are unfamiliar. They have to not only impress Abby, but also this high-profile choreographer who is a power player in the dance industry.