Natalie Portman walked the red carpet today for the premiere of "Black Swan" -- where she was no ugly duckling.

Natalie Portman - Venice Film Festival
Dressed in a beautiful crimson gown and showing off some serious leg, Portman looked gorgeous at the event -- which doubles as the opening ceremony for the Venice Film Festival.

Also looking bellissima in Italy was Jessica Alba, who wore a floral Dolce&Gabbana cocktail dress to a "Machete" photocall earlier in the day.

Check out the gallery for more Venice Film Festival fashions!