All of Hollywood's finest showed up looking their absolute best at Leonardo DiCaprio's Foundation Gala on Wednesday night, but Kate Hudson really stole the show in her black sheer gown. The 36-year-old actress wore a sparkling back gown with a revealing cut-out top and a sheer skirt, according to Daily Mail. The Julien MacDonald dress showed off her flawless figure and was cut out in all the right places.

The glamorous charity auction was DiCaprio's second annual environmental foundation gala. This one took place in St. Tropez at the Domaine Bertaud Belieu vineyard and raised over $40 million for the Leonardo DiCaprio Foundation, which helps protect the Earth's last wild places and fosters a harmonious relationship between humanity and the natural world.

Hudson wore her hair in lose curls and brought her mom, Goldie Hawn, as her date, according to Us Weekly. Hawn fit right in with the A-List stars as she rocked a beautiful, flowing, pale green gown.

Other stars in attendance included Michelle Rodriguez, Nina Dobrev, Marion Cotillard, Irina Shayk, Kelly Rohrbach and Chrissy Teigen. Even the men, especially DiCaprio and Orlando Bloom, cleaned up nice.

Hudson took to Instagram to share a shot of all the stunning ladies before the event. "St. Tropez @leonardodicaprio #leonardodicapriofoundation," she captioned the photo, tagging Nina Dobrev, Hillarly Harley and her stylist Sophie Lopez.

She then shared another photo of her and Lopez lying in their gowns laughing in the grass. "Sometimes u just have to watch the sun come up with a best friend," she wrote.