The fashion world was in mourning on Monday, as news broke that designer L'Wren Scott was found dead of an apparent suicide. The 49-year-old girlfriend of rocker Mick Jagger reportedly hung herself with a scarf in her luxury Manhattan apartment, where she was found by her assistant. The Medical Examiner's Office will determine Scott's official cause of death. A spokesperson for Mick Jagger said he is completely shocked and devastated by the news. The rocker, who had been dating the 6' 4" former model since 2001, is currently on tour with the Rolling Stones in Australia.