Hough was born in Orem, Utah, the youngest of five children in a Latter-day Saints (Mormon) family. Her parents are Marianne and Bruce Hough; her father was twice chairman of the Utah Republican Party. Her brother, Derek Hough, is also a professional dancer. She also has three older sisters: Sharee, Marabeth and Katherine.

On March 18, 2014, Hough and her brother Derek announced a summer tour of over 40 cities across the U.S. and Canada, called "Move Live on Tour", which would include dancing and singing from both of them, and the appearance of a group of dancers employed by the Houghs who earned their jobs through auditions. They embarked on the sold out tour on May 25, 2014 in Park City, Kansas and ended it in Los Angeles on July 26, 2014. Due to the success of ticket sales and several sold out venues before the tour had officially kicked off, several more shows were added to the tour schedule, which also sold out. For the tour choreography, the Hough siblings collaborated with Nappytabs.  Following the success of the 2014 tour and high demand, the Houghs announced the return of "Move Live on Tour" in the summer of 2015. Spanning from June 12, 2015 to August 8, 2015, the sold out tour visited over 40 cities throughout the U.S. and Canada, and visited larger venues than in the previous year. Tabitha and Napoleon D'umo "Nappytabs" returned as collaborating choreographers alongside the Hough siblings. Auditions were also held to recruit a new group of dancers to join the Houghs, although some back-up dancers from the previous year returned.  On July 9, 2016, the Houghs held a free fitness pop-up event called 'Move Interactive' in Los Angeles, which they announced would be the first of many. The event started off in Sherman Oaks with a workout session at Pulse Fitness Studios led by celebrity personal trainer and owner, Mark Harari. The participants then took part in a two-mile run along Ventura Blvd, before finishing off with a dance-fitness class at JustDance Los Angeles. According to Hough, the motivation behind the event was to "bring health, love, community and human interaction into our everyday lives." The following week, on July 14, the Hough's held a second free Move Interactive event in Fryman Canyon, LA, which included a hike and team building exercises.  On December 14, 2016, they announced, via social media, that they would be going on a new tour, MOVE BEYOND Live on Tour, in 2017.

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