The TV presenter and model shared her happy news with fans via a cute Twitter picture on Monday morning (24 March).
Stacy's photo showed a bun cooking in an oven… which was pretty self-explanatory! However, she added the caption: "Look what we've got cooking! A Bun'dle of love!"
It's the first child for 34-year-old Stacy and her entrepreneur husband Jared Pobre, who only married at the start of this month.
The couple tied the knot in secret on a beach in Mexico on 8 March, only revealing their nuptials once the ceremony had finished.
Stacy met Jared after she split from George Clooney after two years of dating in summer 2013, with sources at the time claiming it's because she wanted to settle down and have a family while he didn't.
Congrats to Stacy and Jared!
More celebrities who've announced 2014 pregnancies in pictures!
Copyright: WENN Lexie Appleby/Future Image/Bridow/Instagram
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