According to People, the couple's second child, Vernon, named after Vaughn's father, was born in a hospital outside L.A. The baby weighs 8 pounds, 4 ounces and is 21 inches long.
"The whole family is so excited to welcome this sweet boy into the world," a friend of Vaughn told the magazine. "I am sure Vince will have Vernon out on the ball field in no time!"
Their first child, Locklyn Kyla Vaughn, was born on Dec. 18, 2010.
Vaughn will star in the upcoming "Delivery Man," in theaters Nov. 22, about a man who finds out he has 533 children through anonymous fertility clinic donations.