L'Wren Scott was found dead on Monday in her New York City apartment.
The fashion designer, who has been dating Mick Jagger since 2001, was found hanged to death. She was 49.
According to authorities, the body of L'Wren Scott was discovered hanging from a scarf on a doorknob by her assistant around 10 a.m. in the Chelsea neighborhood of Manhattan. Preliminary reports suggest a suicide and foul play is not suspected; however, the medical examiner will determine a cause of death.
[Related: Who Was the Late L'Wren Scott?]
Police sources tell the New York Daily News that Scott texted her assistant around 8:30 a.m. asking her to come over.
L'Wren has dressed the likes of Angelina Jolie, Michelle Obama, Penelope Cruz, Nicole Kidman, and Sarah Jessica Parker.
Scott started her career as a model, working with designers such as Chanel and Thierry Mugler, among others. She then began working as a stylist, collaborating with the likes of Liz Taylor and Karl Lagerfeld. She launched her first collection, Little Black Dress, in 2006.
[Related: Celebrities Remember Designer L'Wren Scott]
Scott canceled her scheduled London Fashion Week show on Feb. 16 following production delays. Her last red carpet appearance was at the British Fashion Awards 2013 at London Coliseum on Dec. 2.
Jagger, 70, is currently on tour with the Rolling Stones in Australia. A spokesperson for the singer tells Yahoo he is "completely shocked and devastated."
Reportedly, she left no suicide note behind.