The actress and her fiancé, entertainment lawyer Jamie Afifi, welcomed daughter Frances Afifi on Thursday, April 28, Chalke confirms to PEOPLE.
Frances is named after her maternal great grandfather and will go by Frankie.
Frankie is the second child for the couple, who are already parents to 6½-year-old son Charlie Rhodes.
“I’m excited to have both experiences in having a girl and a boy,” Chalke, 39, tells PEOPLE. “I grew up with three girls and [when] I found out I was having a boy, I was like, ‘Wait, how do I do this?’ “
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“That’s been so fun,” the new mom of two continues. “I can’t imagine not having that — having a son and having lightsaber fights … it’s been cool getting to have the different experiences.”
In April Chalke’s rep confirmed the actress was expecting again.
“Charlie loves nothing more in the world than diggers,” the Canadian actress told PEOPLE of her firstborn back in 2013. “He’s obsessed with diggers and backhoe loaders in particular — I’m very well schooled in all of this.”
— Jen Juneau with reporting by Rebecca Sloane