In anticipation of tomorrow night’s Academy Awards, we’re taking a look back at the most breathtaking gowns to ever hit the Oscars red carpet. Nicole Kidman in Christian Dior, Beyonce in Atelier Versace, Anne Hathaway in Giorgio Armani, and Hilary Swank in Guy Laroche are just a few of our favorites. See our top 25 looks in the gallery, then check InStyle.com tomorrow night to get all of the latest red carpet updates for the 2012 show.

BEST OSCAR GOWNS

MORE:
• See the 2012 Oscar Nominees!
• Oscar Nominees’ Transformations
• 10 Memorable Oscars Beauty Moments