The Babysitter's Club Cast Then and Now
Ahead of the Netflix Revival, Check in With the Original Baby-Sitters Club
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Soon after The Baby-Sitters Club, Oleynik snagged another indelible role: as popular Bianca in 1999's 10 Things I Hate About You. She also starred as the title character on the Nickelodeon sci-fi series The Secret World of Alex Mack from 1994 to 1998. Since then, she's had recurring roles on popular TV shows including Mad Men, Hawaii Five-0, and Pretty Little Liars.