The former Saved By The Bell actress kept her hands protectively on her blossoming baby bump while posing for pictures at the AOL Build Speaker Series on Tuesday, 24 February.
She as at the event to discuss her new Cooking Channel show Dinner at Tiffani's, which sees her inviting her famous friends over for dinner, drinks and fun.
Tiffani is expecting her second child with husband Brady Smith.
The couple are already parents to daughter Harper Renn, four, who is already getting excited about the thought of having a little brother or sister!
Announcing the pregnancy in January, Tiffani, 41, said: "We are excited to announce the news that we are expecting. Harper could not be more thrilled to have a sibling and a playmate."
Tiffani's baby bump made an appearance in the recent Saved By The Bell reunion, which reimagined what life at Bayside High would have looked life if Zach had knocked Kelly up. Yikes!
If you haven't seen it, watch below. It's brilliant!
Tiffani isn't the only Bell star celebrating happy baby news lately.
Her co-star Mark-Paul Gosselaar, who played Zach, welcomed his fourth child, son Lachlyn, on Tuesday, 17 February.
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