Season 35 of Dancing with the Stars introduced viewers to a brand-new pro dancer, Hailey Bills. However, she’s no stranger to the ballroom. The 20-year-old is the niece of veteran DWTS pro dancers Val Chmerkovskiy and Jenna Johnson through her mother, Johnson’s older sister Stacy Bills. Hailey Bills was part of the DWTS troupe last year and a junior pro on Dancing with the Stars: Juniors, where she competed alongside Tripp Palin under Johnson’s coaching while Chmerkovskiy judged. The pair was...