VIDEO : Julianne Hough & Derek Hough Dress Up Like La La Land Couple at Party

The siblings and Dancing With the Stars cast members Julianne Hough and Derek Hough dressed up like Emma Stone and Ryan Gosling's characters from the musical film La La Land at friend Nina Dobrev's 28th birthday party at a bowling alley. Julianne sported a bright yellow dress while Derek wore a light tan suit jacket, a matching newsboy cap, a gray tie and dark pants.