Cannes: Jessica Chastain, Christoph Waltz Attend AmfAR Charity Event

Alessandra Ambrosio

The model -- and Victoria's Secret Angel -- posed for photographers in a Zuhair Murad gown.

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Christoph Waltz

Christoph Waltz donned a navy tux for the event. The Oscar winner had a scare Friday when a noise that sounded like gunshots broke out during a crowded evening on Cannes' main thoroughfare. Waltz and fellow Cannes jury member Daniel Auteuil were being interviewed by a TV crew when the incident occurred; they were rushed offstage.

Goldie Hawn

Goldie Hawn brightened up the carpet in a yellow, flowing gown.

Hot Chelle Rae

From left: Band members Ian Keaggy, Nash Overstreet, Ryan Follese and Jamie Follese all went with a variation on the black jacket as their party attire.

Janet Jackson

The singer-actress was on trend in an all-white Armani Privé pantsuit and matching strappy sandals while rocking a Paolo Bongia ring.

Jessica Chastain

Jessica Chastain's red, one-shoulder Saint Laurent gown complemented her hair color.

Kylie Minogue, Andres Velencoso

The Australian singer, who wore a low-cut white Roberto Cavalli number, arrived to the amfAR gala with boyfriend Andres Velencoso.

Milla Jovovich

Dressed in a Valentino Haute Couture Spring 2013 collection, the American model looked glamorous underneath the tier floral gown.

Paris Hilton

The 32-year-old socialite, who recently signed with Lil Wayne's Cash Money label, posed for the camera in a dazzling sheer, feathered frock.

Paz Vega

Paz Vega shined in a plunging black number and gave her minimal outfit a dramatic look with the smoky eyes and red hot lipstick.

Petra Nemcova

The Czech model arrived to the scene in a stunning embellished sequin Elie Saab dress from the Fall 2013 collection.

Rosie Huntington-Whiteley

The Victoria's Secret model showed off her slim legs in a strapless Dior dress with matching white heels.

Sharon Stone

Sharon Stone graced the carpet in a white Roberto Cavalli gown with a sea-inspired ruby and diamond starfish cuff.

Kenneth Cole With Daughter Catie

AmfAR chairman of the board Kenneth Cole, who joined the organization in 1987, walked the carpet with his daughter Catie.

Dita Von Teese

The burlesque star channeled classic Hollywood glamour in a velvet Ulyana Sergeenko gown with dangling pearl and diamond earrings by Chopard.

Stacy Keibler

The actress shined in a Zac Posen mermaid gown, accentuated with an oversized bow.

Heidi Klum

Slipping into a strapless gold Marchesa dress, the America's Got Talent judge smiled for photographers on the carpet.

Rosario Dawson

The Trance actress showed a little leg in her black gown while walking the amfAR carpet.

Dylan McDermott

The American Horror Story actor looked dapper in a classic tux.

Lara Lieto, Adrien Brody

The Academy Award-winning actor went for a black and white ensemble, while his girlfriend, Lara Lieto, dazzled in a black sequined gown.

Selita Ebanks

The fashion model hit the carpet in a pink, embellished sheer gown.