Derek and Julianne Hough are some of the most accomplished siblings to grace the Dancing With the Stars ballroom - and they have even more relatives behind-the-scenes. "I have four sisters and all my clothes were hand-me-downs from them," Derek exclusively told Us Weekly in 2021. "I would color my pink tennis shoes with a sharpie and hunt for all the unisex shirts." Derek and Julianne, who have won a collective eight mirrorball trophies, are the youngest of the Hough clan. "My three older sisters all danced and sang and acted. We were in, like, a band.