A transgender man who surprised the world in April by revealing he was pregnant gave birth Sunday to a baby girl at a hospital here.

Thomas Beatie, 34, who switched gender from woman to man, delivered his baby at the St. Charles Medical Center. He gave birth naturally.

The father has already left the hospital with his baby, who was conceived through artificial insemination using sperm from a donor. Before undergoing surgery to change his sex and remove his breasts, Beatie decided to retain his female sex organs because he still wanted to have a baby.

After the sex change operation, Beatie legally changed his gender to male.