Freddie Prinze Jr. and Sarah Michelle Gellar

Sarah Michelle Gellar and Freddie Prinze Jr. are expecting their first child together, People reports.

"They're very excited," a source tells the magazine. Gellar, who turns 32 on Tuesday, is reportedly due in the fall.

The former Buffy star, who is slated to shoot the HBO pilot The Wonderful Maladays, has been married to Prinze, 33, since 2002. This will be the third Buffy offspring this year: Gellar's former small-screen sidekick Alyson Hannigan gave birth to a daughter last month, while David Boreanaz is expecting his second child in the fall.