Uma Thurman Gives Birth to Baby Girl!

Reported by UsWeekly

Uma's a mama again!

Uma Thurman gave birth to a baby girl on Sunday, a source confirms exclusively to Us Weekly. No other info was immediately available.

It's the third child for the 42-year-old Oscar nominee, who has two children -- Maya, 13, and Levon, 10 -- with ex-husband Ethan Hawke, and her first with financier beau Arpad Busson.

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The "Smash" guest star and Busson, 49, called off their engagement in 2009, but reunited last year. "Uma was definitely not planning on having another kid. It was a surprise," a source told Us, which first broke the news of Thurman's pregnancy back in February. "But she's over the moon about it, very excited."

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Thurman and her daughter-to-be were feted at a small baby shower in New York on May 31, thrown by her half-sister Taya Thurman. Among the two-dozen guests at the baby pink-elephant-themed bash were Thurman's "Smash" co-stars Debra Messing and Will Chase.

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Thurman's ex-husband Hawke has also become a parent again following their 2004 divorce; the actor, 41, and second wife, Ryan, are parents to young daughters Clementine, 3, and Indiana, 11 months.

Keep clicking to see more photos of Uma from throughout her pregnancy!

This article originally appeared on Usmagazine.com: Uma Thurman Gives Birth to Baby Girl!