Rachael Leigh Cook's husband, actor Daniel Gillies, announced on Twitter the U.S. actress gave birth to their first child, a daughter.

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"It's a girl. The tiny new empress of my everything . She's immaculate. We're delirious," Gillies tweeted Sunday.

He did not mention the child's name or exactly where and when she was born.

Cook, a cast member of the TV series "Perception," married Gillies, star of "The Vampire Diaries," in 2004.