Article continues below advertisementKimora Lee Simmons is embracing her role as a "surrogate mom" to Sean "Diddy" Combs' children, stepping up for the late Kim Porter's kids. The fashion designer shared her heartfelt commitment during her appearance on Today with Jenna & Friends on Wednesday, December 3.Article continues below advertisementSimmons, 50, revealed the depth of her relationship with Porter's four children - Quincy Brown, 34, King Combs, 27, and twin daughters D'Lila Combs and Jessie Combs, 18. "One of my friends who passed away, Kim Porter, I have all of her kids," she stated.