Is Rachel Zoe keeping something under wraps?

While vacationing in St. Barts over the holidays, the stylist-to-the- stars refused to reveal her midsection, wearing oversized caftans while everyone else was in swimsuits, and a source tells RadarOnline.com that the reasoning behind her oversized attire is that Zoe is pregnant with her second child!

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The source, who works in the fashion industry, claims that Zoe admitted to a fellow stylist last month that she was already pregnant with her second child, and from the looks of her resort wear, it appears that there may indeed be another bun in the oven!

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“Rachel is just past the three month mark so she’s hardly showing yet at all,” the source says. “She’s thrilled, but, quite frankly a little shocked!

Though she has been rumored to be pregnant for weeks after being spotted sipping water at a charity event, Rachel Zoe made the happy news official on Wednesday.

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“Hey everyone! I want to officially confirm to my loyal friends and followers that I am pregnant!” she wrote on her Twitter page. “I feel great, Rodger and I are beyond excited and so thankful for all of your love and support. xoRZ & RB.”

The Second Coming of Rachel Zoe The Second Coming of Rachel Zoe

On her reality show this past season, much off the on-air drama centered around her and her husband Roger Berman’s decision-making about having a baby. Zoe, a celebrity stylist to the stars, debated between growing her fashion empire and slowing down to start a family.