The actress – who played everyone's favourite cheerleader Kelly Kapowski – treated daughter Harper Renn to a day out in LA on Sunday, 19 April.
Tiffani and husband Brady Smith posed for pictures with little Harper, four, at the Milk and Bookies Story Time Celebration.
How cute is Harper?!
Tiffani and Brady have confirmed their second child will be a little boy and that Harper can't wait to become a big sister. Tiffani said back in January: ""Harper could not be more thrilled to have a sibling and a playmate."
Since her Saved By The Bell and Bayside High days, Tiffani, now 40, has appeared in shows including Beverly Hills, 90210, White Collar and Fastlane.
Her most recent TV venture is Dinner at Tiffani's, a series on the Cooking Channel which features Tiffani and her famous friends chatting while enjoying a dinner party.
Tiffani did, however, dig out the old Bayside High cheerleader outfit earlier this year to join castmates in a BRILLIANT Saved By The Bell spoof sketch on The Tonight Show with Jimmy Fallon in the US. The comedy sketch wondered what Bayside High would have been like if Zach had knocked up Kelly... how scandalous!
Check out some of the best maternity fashion below: