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Celeb bump day: Uma Thurman, Sienna Miller and more!

Kim Grundy is a mom, writer, expert laundry folder and sandwich maker, not necessarily in that order. Raised in Oklahoma, she is now a West Coast gal and lives in California with her husband and two sons, along with one dog, two fish (oo...

Celebrity baby bump watch

Happy Wednesday Hump Day -- also known as Celebrity Baby Bump Day! We rounded up the cutest pregnant celebrities of the week. Uma Thurman's baby bump has grown overnight! The actress showed off her pregnancy curves in a cute bathing suit while on vacation. We caught Sienna Miller having lunch -- and she is really starting to show! Also check out pregnant celebrities Kristin Cavallari, Molly Sims and Vanessa Lachey.

Celebrity baby bump watch

Uma Thurman

Bikini baby bump! Pregnant Uma Thurman was spotted having fun on a yacht in St. Barts wearing a black one-piece bathing suit paired with a sun hat. The 41-year-old actress is vacationing with her two kids with ex-husband Ethan Hawke, Maya and Levon.

The actress is expecting her third child with her boyfriend, financier Arpad Busson -- and it's reportedly a girl!

"She's happy and just a few months along right now," a source told Life & Style. "She's due in late summer.''

Many celebrities are ignoring their biological clocks and enjoying midlife motherhood.

From Uma to Madonna and Salma Hayek, check out pregnant celebrity moms over 40 >>

Photo: WENN

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