Sarah Michelle Gellar and Freddy Prinze Jr. Welcome Birth of a Baby Boy

And baby makes four!

Former Buffy the Vampire Slayer star Sarah Michelle Gellar and her hubby Freddy Prinze Jr. welcomed a baby boy last Friday, Sept. 21.

Us Weekly reported that Gellar, 35, gave birth to her second child, giving their three-year-old daughter Charlotte Grace a younger brother to play with.

And a baby fun fact — Charlotte and her little bro are born just two days apart.

How does she feel about being a big sis?

Charlotte is apparently super stoked to take on her new role, welcoming the bundle of joy with open arms.

And she’s not the only one.

The magazine reported that the Ringer star and her husband — who have been married for almost a decade since meeting on the set of 1997′s I Know What Your Did Last Summer – are absolutely thrilled to expand their famous family.

Who do you think will be the next one to join the Hollywood baby boom? Weigh in below.