Once the perfect gown is chosen, the stars and their glam squads start dreaming up hair and makeup looks to match.
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Glee star Dianna Agron, 25, played it safe with her pink Caroline Herrera gown, but took a beauty risk with her fishtail braid updo.
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Lea Michele, 25, went with the opposite approach, showing off serious leg in a super-sexy Versace dress, which she paired with a simple blowout.
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In keeping with her glamorous tea-length Alexander McQueen design, Emma Stone, 23, wore her hair in an elegant undo and pretty makeup.
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