According to People magazine, the actress is pregnant with her first child.
The baby is expected to arrive in the fall, and the parents-to-be are thrilled. "They’re very excited," a source revealed.
Gellar and Prinze met on the set of the film I Know What You Did Last Summer in 1997, and began dating in 2000. The two were married in 2002.
Sarah Michelle Gellar will star in the drama Veronika Decides to Die, opening in November.