Derek Hough is one of the biggest reasons that Dancing With the Stars is such a success. It's season 21 and the momentum has not slowed. Viewers can't wait to see Hough perform in the ballroom each week as he is a truly gifted choreographer ... and he's pretty hot, right? Standing at 5'10" in height, Hough makes for a strong dance partner for any celebrity competing on the show. Hough's career has taken off since he first joined the show and now he has an estimated net worth of $4 million. He's also rumored to be dating A-list actress Kate Hudson. Whether it's true or not, Hough makes for great eye candy in the DWTS ballroom. For more information on Derek Hough, click through our gallery of his best Instagram photos.