The 55-year-old comedian welcomed his ninth child -- a baby girl -- with his longtime girlfriend, 36-year-old Paige Butcher, on Tuesday morning, his rep confirmed to ET. The couple named their daughter, Izzy Oona Murphy.
"Both mother and daughter are doing well," the rep says.
Izzy -- who weighed 7 lbs., 15oz. and was 19 1/2 inches at birth -- marks the first child for Butcher, and the ninth for Murphy. Murphy's oldest children are Eric, with ex-girlfriend Paulette McNeely, and Christian, with ex-girlfriend Tamara Hood. He has five additional kids with ex-wife Nicole Mitchell -- Bria, Myles, Shayne, Zola, and Bella. His youngest is 9-year-old Angel, with former Spice Girl Melanie "Mel B" Brown.
Murphy returned to stand-up after 28 years when he received the Mark Twain Prize for American Humor at The Kennedy Center in Washington, D.C. last October. The former Saturday Night Live star's routine included a dead-on impression of disgraced comedian Bill Cosby.