Miss Portman has been quite the socialite at Cannes this year, serving as the youngest member of the jury, as well as publicly displaying her affection for boyfriend Devendra Banhart.
And at the "Che" premiere, she looked stunning in a ruffly red strapless minidress with a pair of black peep-toe heels and a seriously sculpted coif.
Naomi Campbell also checked out the controversial film, decked out in a floor-length silvery-white multi-textured gown with a pair of strappy silver heels.
And Eva Herzigova definitely won the award for "Best Throwback to the '80s" in her black teddy-looking dress with a black lace overlay, a massive diamond necklace, and some seriously volumized hair.
Enjoy the pictures of Eva Herzigova, Natalie Portman and Naomi Campbell at the Cannes premiere of "Che"