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Twinning combo: The girls made a serious case for the little white dress and long white gown at a November 2007 dinner.

  • Mary-Kate nailed the beach-babe look in a short white Giambattista Valli design, which she paired with neon-detailed platforms and a colorful wristlet.
  • Ashley took the long approach in a sleek cutout Calvin Klein gown and minimal accessories.

Image Source: Getty
Read More Calvin KleinGiambattista ValliMary Kate OlsenAshley OlsenCelebrity StyleCelebrity LookbookFashion Birthday
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