Porter was found unresponsive Thursday at her Los Angeles home, where paramedics pronounced her dead.
According to TMZ, the police responded to an emergency dispatch audio saying Porter was in cardiac arrest. A source told TMZ that the model had been suffering flulike symptoms, and possibly pneumonia, for several weeks.
A representative for Kim Porter confirmed the news and asked for privacy for the family. "Lord please give her kids & her whole family strength".
The "Been Around The World" hitmaker - who had son Christian, 20, and twins Jessie James and D'Lila, 12, with Kim - has been left crushed by the news as he remained "very close" to the 47-year-old model.
Host Sean "Diddy" Combs and Kim Porter with their twin daughters D'Lila Star Combs and Jessie James Combs pictured at "The Real White Party" presented by Sean "Diddy" Combs at the Combs' East Hampton estate on September 2, 2007, in East Hampton, New York.
That didn't stop stars and some of Porter's famous friends from taking to social media to pay tribute to the mother of four. She is also the mother to Quincy Brown, from a previous relationship with Al B. Sure! She was loved and will be missed dearly. Sending love to Puff as well, I can't even imagine what you must be going through. "Chin up, Puff. Positive vibes only".
Porter also appeared on TV shows like "Law & Order" and "Wicked Wicked Games", as well as movies including "The Brothers" and "Mama, I Want to Sing". They broke up in 1994 and again in 2007.
A source told the New York Post in 2001 that Combs had still been living with Porter in 1999 when he started seeing Lopez.
"In ending this relationship, I made a decision that was in the best interest of myself, Sean and our family, Porter said".