It's a girl for Lily Rabe and boyfriend Hamish Linklater, the American Horror Story actress shared on Instagram
Credit: Source: Lily Rabe Instagram

Lily Rabe is a mom!

The American Horror Story star and her partner Hamish Linklater recently welcomed a daughter, she shared on her Instagram account. The photo posted by Rabe shows her snuggling up close to her new baby girl, who’s wearing an adorable pink knit cap.

“Happy International Women’s Day. Today. Tomorrow. Every day. Girls are magic,” she wrote alongside the sweet shot, hashtagging it, “#internationalwomensday #weshouldallbefeminists #thefutureisFEMALE.”

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Lily Rabe,Hamish Linklater
Credit: Owen Sweeney/Invision/AP

Rabe’s rep confirmed to PEOPLE in late December that the couple were expecting after the actress and Linklater appeared at the 2016 Kennedy Center Honors in Washington, D.C. Rabe, 34, wore a light-pink gown and placed a hand over her obvious baby belly for photos.

She also posted a photo to Instagram from the same event, in which she is posing in front of the White House, her bump clearly visible under a royal-purple gown.

“Taking my baby to The White House,” Rabe captioned the memorable moment.

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The new baby girl is the first child for Rabe and the second for Linklater, who is dad to 9½-year-old daughter Lucinda Rose from his previous marriage to screenwriter Jessica Goldberg.

Rabe and Linklater, 40, have been together for years, and worked together in the past on stage and in film and in theater. They’ll next star together in a film adaptation of A Midsummer Night’s Dream, which has wrapped production and is set for a 2017 release.