The former wrestler smiled radiantly and rested her hands on the beginnings of a tiny baby bump, which she was showing off in a daring black gown which featured cut out sections.
According to unconfirmed reports, Stacy's new arrival will be a little girl.
Super fit Stacy, who was attending the Women in Music celebration event in Hollywood, is said to be in her fourth or fifth month of pregnancy. Yet her bump was barely noticeable, unless she rested her hand on it for effect.
Clearly in great shape as she progresses through her second trimester, Stacy is a fan of working out and a regular poster of pictures of herself in the gym.
It seems pregnancy won't stop her exercising either - on Monday she was spotted enjoying a hike in Beverly Hills.
George Clooney's former love used this fun snap to share her and Jared's big news.
In March 2014 Stacy wed handsome technology entrepreneur Jared in an intimate ceremony in front of a small group of friends and family – who were only told of the real holiday plans during the flight to Mexico.
The couple admitted that they were unsure about taking their relationship to the next level after being pals for five years but ultimately love won the day.
And the two went on to use an image of a bakery treat, just in time for the Easter season, to tell her Twitter followers that she had a bun in the oven.
The former wrestler is in great shape as she sails through her second trimester.
Speaking to HELLO! before the happy announcement, Stacy had already shared that they were eager to increase the number of loved ones in their bubble as soon as possible.
"We are both eager to have a family," she exclusively told the magazine, before adding: "Family is very important to us, as is expanding on the family that we now share together."