About a minute into the routine, Maddie joined her sister and Sage on the dance floor, wearing the same pink dress and high bun as Kenzie. The audience was understandably thrilled about her cameo, and Sage looked pretty happy to be dancing with both of the incredibly talented Ziegler sisters. The routine ended with a double one-handed cartwheel from Maddie and Kenzie. To us, this routine was absolute perfection. adidas ubersonic 2.0 performance unleashed a shining new star who will forever be known as "Backpack Kid." Prior to her rendition of "Bon Appetit," the singer-songwriter showed off the much talked about "Swish Swish," which featured an array of ensemble dancers. But it was the youngest of those dancers that caught the eye of audience members around the internet, not to mention his slick dance moves. Backpack Kid, we salute you.Twitter contentView on TwitterTwitter contentView on TwitterTwitter contentView on TwitterRelated: adidas ubersonic 2.0 estimated that it cost the New York Police Department between $127,000 and $146,000 a day to protect the First Lady and her son over the course their stay since the inauguration. Calculating the average of those two prices ($136,500), we can deduce that it cost the NYPD an average of $19,656,000 to allow Melania and Barron to stay in Manhattan for a total of 144 days. And if we're looking at the highest amount of that estimated range, it may have cost up to $21,024,000. adidas ubersonic 2.0 style team can’t help but zoom in on the looks these celebs are wearing while getting in on the fun.Instagram contentView on Instagram adidas ubersonic 2.0