Mirror, mirror on the wall, who’s the unfairest of them all? It's a tough call, because Hollywood's fight over Snow White is getting ugly. A battle between Universal Pictures and the studio's linchpin financier, Ryan Kavanaugh's Relativity Media, is unfolding over their competing efforts to adapt the same fairy tale. What's more, Vulture hears exclusively that Relativity has offered the job of directing its version of Snow White, The Brothers Grimm: Snow White, to Tarsem Singh, the renowned commercials director (of crazy expensive spots like last year’s Britney/Pink/Beyoncé "We Will Rock You" Pepsi commercial) and the guy behind the equally visually wild Jennifer Lopez thriller The Cell. It's unclear whether they'll reach a deal, but talks are proceeding apace.