Photo SpecialBecoming... Reese Witherspoon

See how the Vanity Fair star went from Nashville schoolgirl to Hollywood A-lister. By Serena Kappes

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CAUSE CELEB

Witherspoon joined forces with fellow celebrities (from left) Susan Sarandon, Courtney Love and Rosie O'Donnell for May 2000's Million Mom March in Washington, D.C., which called for stricter gun-control laws. "This was a great thing for me to do on my first Mother's Day," Witherspoon told Teen People.

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