Ariana Grande's instantly iconic 'Thank U, Next' music video debuted yesterday, and it paid homage to Legally Blonde, 13 Going on 30, Bring It On, and Mean Girls. Now the stars of the original films that inspired the project are responding to Grande's take on the rom-coms...and spoiler alert, things are getting nostalgic. Here, the best responses from the original cast members.

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Christa B. Allen, Young Jenna Rink in 13 Going On 30

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Gabrielle Union, Isis in Bring It On

Reese Witherspoon, Elle Woods in Legally Blonde

Jennifer Garner, Jenna Rink in13 Going On 30

Mark Ruffalo, Matty in 13 Going On 30

Jonathan Bennett, Aaron Samuels in Mean Girls

From: ELLE US
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Holly Rhue
ELLE.com Contributor
Holly Rhue is a writer and editor in New York City.