The 34-year-old model confirmed the news that she was pregnant with her first child via Instagram and Twitter on Monday posting a picture of a "bun in the oven."
"Look what we've got cooking! A Bun'dle of love!" Keibler captioned the pic.
News of the pregnancy comes almost two weeks after Kielber married tech entrepreneur Jared Pobre after eight months of dating in a surprise wedding in Mexico.
Rumor's that George Clooney's ex girlfriend was pregnant began soon after she tied the knot with Pobre; Page Six claimed the pregnancy was the main reason behind the rush wedding.
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Stacy Keibler has a bun in the oven.
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