It is with the heaviest of hearts that we report that fashion designer L'Wren Scott, who was the longtime love of Rolling Stones frontman Mick Jagger, was found dead in her NYC apartment today (March 17). Several reports indicate that her death was a suicide and that Scott hung herself.

Scott was just 47.

Cops were called to her apartment, nestled in the Chelsea neighborhood of Manhattan, at 10AM. An assistant reportedly discovered the designer. An autopsy will be performed to determine the exact cause of death.

Scott was both a designer and a stylist whose wares were worn by some of the best-dressed women in Hollywood and beyond. Madonna wore her famous "Headmistress" dress, and other A-listers like Angelina Jolie, Reese Witherspoon and Jennifer Lopez have all donned Scott's designs in the past.

Jagger is currently on tour with the band and his rep told ABC that he is shocked and devastated by Scott's suicide.

PopCrush sends our thoughts to Scott's family, friends and associates over this sad, tragic news.