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Riley Keough, Eva Longoria, Cannes Film Festival

Gisela Schober/Getty Images, Pascal Le Segretain/Getty Images

Despite the film being about a friendship-gone-wrong between two men played by Mark Ruffalo and Steve Carell, all eyes were on Eva Longoria and Riley Keough at Foxcatcher's Cannes Film Festival premiere.

And they aren't even in the movie!

While the actors looked dapper in generic tuxedos, Longoria went full-on bombshell in a full-length nude dress with a high neckline and a keyhole opening that plunged diagonally from her chest to her midriff, exposing a lot of her left breast in the process.

Eva Longoria, Cannes Film Festival

Pascal Le Segretain/Getty Images

She may have just been making the scene, but Longoria is our vote for Best Supported Actress.

Also putting the proverbial fox in Foxcatcher was Lisa Marie Presley's daughter Riley Keough, who paired a gorgeous brocade skirt with a crisp white shirt with a plunging V-neck that made the look far more sexy than secretarial.

Riley Keough, Cannes Film Festival

Gisela Schober/Getty Images

And though Foxcatcher is earning rave reviews, especially for the performances by Carell, Ruffalo and Channing Tatumas murderous multimillionaire John E. du Pont and wrestling champ brothers Dave and Mark Schultz, they could only do so much in the fashion department opposite Longoria and Keough.

Way to steal the show, ladies!