May 17, 2012 - 11:26 BST hellomagazine.com Cannes 2012: Eva Longoria pulled out all the stops in a stunning Marchesa gown Eva Longoria pulled out all the stops for the Cannes Film Festival opener on Wednesday night. Her show-stopping, mermaid-style Marchesa gown featured intricate embroidered details, and a voluminous tulle train that went on for miles. The Desperate Housewife won the prize for standout gown at the premiere of Moonrise Kingdom. VIEW GALLERY CLICK ON PHOTO FOR GALLERY The 38-year-old was closely followed in the style stakes by Diane Kruger, who looked ethereal in a one shoulder Giambattista Valli Couture gown. She floated up the red carpet, trailing a long cape-like swathe of aqua silk behind her. Other beauties at the event included Freida Pinto, Jane Fonda and Eva Herzigova. VIEW GALLERY After the celebrities had checked out Wes Anderson's romantic comedy – which tells the tell of two young lovers who cause havoc when they run away – they moved on to the opening ceremony dinner. Eva changed into a gorgeous monochrome dress by Alberta Ferretti for the bash, at which Beth Ditto sang. Freida also debuted a second outfit – she swapped her funky pink Michael Angel number for a glittering black sequin Versace dress.Sacha Baron Cohen spotted canoodling with George's ex ElisabettaGlamour through the ages as Eva joins Freida and Jane on the Riviera