Teen Idols: Then & Now

THEN: Mayim Bialik

Mayim Bialik started her Hollywood career as a child actress in the early 1990s as the lead on the NBC series "Blossom." The show ran from 1991-1995 and catapulted the young actress to stardom. —XFINITY Entertainment Staff (Photo by Frank Micelotta/Getty Images)

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