She becomes only the fourth woman in the Open Era to win matches as a teenager, in her 20s, 30s and 40s along with Martina Navratilova, Venus Williams and Kimiko Date.
“You never give up,” said Williams. “It seems a cliche but I wanted people to be inspired by my story. I am from Compton, California and I made it.”
Williams, who was wearing a sparkly black top, said: “My outfit had six layers to represent my six titles here. But I took four out because it was too big.”