Mayim Bialik is 50!

The actress who brought the eccentric and precocious Blossom Russo to life first got her start earning small roles here and there in the late '80s before landing her breakout role in 1990. Bialik would helm Blossom for five seasons, bringing the laughs and the drama alongside Joey Lawrence , Michael Stoyanov, Tedd Wass, Jenna von Oÿ and more.

Though she took a hiatus in pursuit of higher education — she earned her PhD in neuroscience in 2007 — she made a grand return to acting as Amy Farrah Fowler in The Big Bang Theory in 2010.

As the actress turns 50 on Dec. 12, 2025, look back at some of her early days.

Rising to the Occasion

Before she was known as Blossom, the young star got her start on TV shows such as Beauty and the Beast, The Facts of Life, Webster

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