Porter also leaves behind 27-year-old Quincy, her son with Al.
She was reportedly taking Saline and vitamins to battle what was thought to be the flu or pneumonia.
Porter and Combs began dating in 1994, splitting and getting back together several times until breaking up for good in 2007.
According to People magazine, "The Los Angeles County Sheriff's Office confirmed Porter's death in a statement, explaining that officers responded to a death investigation at 11:40 a.m.in Toluca Lake, California, where they found a female unresponsive at the residence".
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Callum Wilson, the Bournemouth striker making his England debut, made it 3-0 in the 77th minute. So the former Manchester United star bows out of the worldwide game with 53 goals to his name.
A source told People, "Diddy is devastated and shocked". Kim was also the mother of a son, Quincy, from a previous relationship with singer Al B. Sure! "He and Kim were still very close friends and co-parents even though their romantic relationship didn't work ... they were still a family". Paramedics pronounced her dead at her home. "They were still a family", the source adds.
His representative, Cindi Berger, said: 'Sadly, I can confirm the passing of Kim Porter.
Atlanta native, T.I. posted, "We'll always love you and cherish your handsome spirit".
Kim Porter's death on Thursday morning has devastated not only her ex Diddy - many other celebrities are reeling from the loss.