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.
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Hot mom-to-be! Vanessa Lachey may be pregnant but that didn't stop her and her husband Nick Lachey from helping launch the hottest new bar in Sydney, Australia, called The Star! The expecting parents joined Paris Hilton, Slash, Joe Jonas and more as they partied the night away and listened to a performance by Redfoo from LMFAO.
Photo Credit: James Morgan