2013 Oscars Style: Sexy Dresses Naomi Watts Jessica Chastain

You won't see many miniskirts at the Academy Awards, but floor-length hemlines don't make this set of Oscar gowns any less sexy. Thanks to cut-outs, décolletage-baring necklines, slits and open backs, these gowns bring a seriously sultry vibe to the red carpet. Inside, we've culled only the most jaw-dropping gowns from Oscars night — from the show to the after-parties — click through to see Naomi Watts in a high-impact silver Armani Privé gown, Jessica Chastain's bombshell moment (also in Armani Privé), Halle Berry's custom Atelier Versace stunner, and the rest of tonight's head turners.