Annabelle Neilson, Star of Bravo's Ladies of London, Dies at 49

Annabelle Neilson, who starred on the Bravo reality series Ladies of London from 2014-2015, has died. She was 49 years old. According to Us Weekly, the British socialite was found dead in her home Monday and officials are not treating her passing as suspicious.

According to Radar, her cause of death was a stroke. However, Annabelle's sister Camila says she died of a heart attack.

"Very sadly, we have been informed today that my sister Annabelle, died as a result of a heart attack at home last Thursday. It has come as a complete shock, as she had many plans having recently returned from Spain," Camilasaid in a statement to E! Online. "My parents and I are devastated and shocked by this news. We would ask the media to respect the privacy of our family and Annabelle's close friends during this very difficult time. We will not be making any further statement at this time. We thank you for your consideration."

Neilson is perhaps best known for her close friendships with Kate Moss, Naomi Campbell and the late Alexander McQueen. In a 2015 interview with the Daily Mail, she touched on her friendship with the fashion icon who she considered her soulmate. "'He was my brother, my boyfriend, my soulmate. Most of the time people called me Mrs. McQueen. Quite often we were sharing a bed," she said.

Neilson became a heroin addict at the age of 16 but eventually kicked the habit and had been regularly attending Narcotics Anonymous meetings.

In addition to being a former cast member on Ladies of London, Neilson is also a former model and wrote a series of children's books titled The Me Me Me's.