Congrats to Rachael Leigh Cook and husband Daniel Gillies -- they have welcomed their first child, a baby girl.
Gillies, a 37-year-old actor known for his role as Elijah in the CW series "The Vampire Diaries" and new spinoff "The Originals," announced the news on his Twitter page on Sunday.
"It's a girl," he said. "The tiny new empress of my everything. She's immaculate. We're delirious."
The name of the couple's daughter was not released. Cook, the 33-year-old star of movies such as "She's All That" and "The Baby-Sitters Club" and the TNT series "Perception," and Gillies wed nine years ago, in August 2004.
Cook hid her baby bump while filming the show. She told OTRC.com in June: "We stand behind tall chairs, we lean over desks in a pensive way, we do whatever we have to do."