She was just 47-years-old.
"Sadly, I can confirm the passing of Kim Porter", the musician's rep tells Us in a statement.
T.I.P. penned this message to the hip-hop businessman and his family: "We'll always love you and cherish your lovely spirit".
But Missy wasn't the only celeb to pay tribute to the mom who left behind four children - sons Quincy, 27, and Christian, 20, and twin 11-year-old daughters Jessie and D'Lila. The Only Reason We're Alive Is Cause We Gon' Die Another Day....& No One Knows When & Time...
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.More news: LeBron James reacts to Jimmy Butler being traded to Philadelphia
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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. "Chin up puff, Positive vibes only", wrote rapper 50 Cent on Twitter.
Kim Porter, the former model and mother of three of Diddy's children, has passed away.
However, they broke up again - six months after the girls were born - with Porter saying it was her decision at the time.
For much of the 1990s and 2000s, Kim Porter was Puff Daddy's companion.
Porter is also the mother of Bad Boy artist and actor Quincy, whose biological father is R&B crooner Al B. Sure.
Porter once said about their relationship: "Sean and I have this bond, this friendship. We're committed to our children, even if we couldn't commit to each other".