Her official cause of death has not yet been revealed.
According to TMZ, Porter had went into cardiac arrest this morning after suffering from pneumonia for several weekS.
Their children are a 20-year-old son, Christian, and 11-year-old twin daughters, D'Lila Star and Jessie James. Named after her mentor Quincy Jones, Porter was involved in a relationship with singer Al B. Sure! which ended in the mid-90s.
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'This is very bad! Praying so hard for her children and her loved ones!
As an actress, Porter appeared on the TV series "Wicked Wicked Games" in 2006 and 2007 and in the film "Mama I Want to Sing" in 2011.
Social media was mourning her. See below.
U.S. talk show host Wendy Williams, 54, paid her respects, writing: "I just heard the sad news about Kim Porter".
Kim Porter and Sean "Diddy" Combs arrive at the Vanity Fair Oscar Party at Morton's in Los Angeles on February 27, 2005. I know Puff is hit right now, he loved her for rea ...
Rapper 50 Cent took to Twitter to lead tributes to Kim, saying: "R.I.P.to Kim Porter, I send my condolences to her friends and family. Chin up, Puff. Positive vibes only". My condolences to Diddy and Kim's families.