January 03, 2013 07:30 PM

Gregg DeGuire/WireImage

Moon Bloodgood is a mom!

The Falling Skies star, 37, and her husband Grady Hall welcomed their first child, daughter Pepper, on Saturday, Dec. 15, her rep confirms to PEOPLE exclusively.

“I’ve never been happier,” the actress — who chose not to find out the sex of her baby prior to delivery — told KoreAm in September.

“I know now what happiness feels like. Everything just looks brighter, the world just looks sunnier. I think it’s the hormones or something because I feel fantastic. I feel truly like I have purpose, and that purpose is not about me.”

Named one of PEOPLE’s Most Beautiful People in 2006 — and a regular on Maxim‘s Hot 100 list — Bloodgood, who married Hall in August 2011, is also currently appearing in a well-received role in The Sessions, costarring Helen Hunt, John Hawkes and William H. Macy.

When viewers last left her Skies character, Dr. Anne Glass, it had just been revealed that she was expecting.

“Obviously the pregnancy is going to be written in — that I can say,” Bloodgood shares. “But come on, it’s science fiction with aliens, use your imagination.”

— Reporting by Oliver Jones

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