2012 Cannes Film Festival Fashion – Diane Kruger Wears Mint Green Giambattista Valli Couture Gown. Diane looked as if she was floating on air in her mint green Giambattista Valli Couture Gown. Her floor-length gown featured an asymmetrical silhouette, a long extended cape that flowed around the left shoulder of her arm, and very loose airy fabrics that flowed in the wind. She looked like an angel gliding across the red carpet at the ‘Moonrise Kingdom’ Screening. I love how the dress was designed in a mint hue creating the perfect fresh vibe for spring 2012. She completed the look with a high polished bun, and soft diamond jewelry. Look below to see her full look.