Shiri Appleby Shows Off Bare Baby Bump in Green String Bikini Picture

USMagazine, Sunday, March 3, 2013, 5:30pm (PST)

Countdown to baby! Shiri Appleby shared a photo of her bare baby bump in a bikini shot on Instagram Friday, March 1. The Girls guest-star and Chicago Fire actress, 34, is expecting her first child with fiance Jon Shook any day now. "T minus 20 days," the pregnant star captioned the shot.

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In the stunning photo, Appleby proudly shows off her growing bump in a green string bikini while posing for the camera on the beach. Appleby and Shook, who become engaged during a July 2012 trip to Ventotene, Italy, have decided to keep the gender of their baby a surprise.

"He really wanted to do it and it sounded like fun," the actress told Us Weekly of her fiance, a chef at L.A.'s Animal. "It's really made the whole pregnancy a heightened excitement because you just don't know what it's going to be!"

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Appleby celebrated her baby shower on Jan. 27 and her fiance's eatery with about 50 of her female friends. The mom-to-be told Us that her pregnancy has brought her even closer together with Shook.

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"When you see this guy going to all the doctor's appointments with you and you tell him you're feeling a certain way and two minutes later he's looked it up on the Internet to tell you that it's normal, you realize that you're really starting a family with somebody," she told Us, "and it's just -— there's no way to look at that person and not be more in love."

This article originally appeared on Usmagazine.com: Shiri Appleby Shows Off Bare Baby Bump in Green String Bikini Picture