Tennis superstar Serena Williams has given birth to her second child, a baby girl. The 36-year-old athlete announced her pregnancy in January and was forced to pull out of the Australian Open due to the decision. Williams, who already has a daughter, Alexis Olympia, with husband Alex Ohanian, is expected to return to competitive tennis at the Wimbledon tournament in July. She has won the prestigious event seven times. Williams gave birth at a hospital in West Palm Beach, Florida.