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The best friends arrived in coordinating black gowns – Hervé Léger for Miley, Kaufman Franco for Taylor – but changed into casual tunics and skinny bottoms for their duet on "Fifteen."
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Credit: Kevin Mazur/WireImage; Jeff Kravitz/FilmMagic
Updated: Monday Feb 09, 2009 | 01:00 AM EST
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See who rocked their dresses (Taylor! Carrie! Miley!) on music's biggest night
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The stars turn out in full force to celebrate music's biggest night
Relieve the silly, sassy – and scandalous! – things the stars said
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