The "air walk" is America's latest dance craze blowing up on social media. Ballerinas, little kids, and couples are taking part in it. The air walk is inspired by "Dancing With The Stars" finalist Dylan Efron, Zac Efron's younger brother. He nailed the move with his partner, Daniella. On Tuesday night Robert Irwin was declared king of the ballroom. The wildlife expert's older sister, Bindi, who won the mirror ball trophy in 2015, ran in for a celebratory hug.
