The Cast of <em>Blossom</em>: Where Are They Now?

Then: Serving as the show's eponymous protagonist, Bialik played Blossom Russo — the sole female who navigated life as a teen, and was responsible for making the floppy hat popular among viewers.

Now: While Blossom gave Bialik her big acting break, the Girling Up author and mom of two scored accolades for her role in the ultra-successful The Big Bang Theory — alongside co-star Johnny Galecki, whom she had her first kiss with on Blossom. The comedic turn became an easy transition for Bialik, who is also a neuroscientist (like her character) in real life. Now she's one of the two new hosts of Jeopardy! following Alex Trebek's passing. She also stars on Call Me Kat — and recently reunited with her Blossom costars for an episode.