Stars dazzle at the 2015 Cannes amfAR gala

Karlie Kloss and Sienna Miller were among the gorgeous attendees at Thursday night's (May 21) amfAR gala in Cannes. The annual affair draws a slew of celebrities, many of whom opted for glittering gowns this year. Flexing her trademark monochromatic style with a smattering of shimmer, 22-year-old Karlie slid into a champagne-hued Tom Ford number with a choker-style collar.

Sienna, who this year is one of the festival's jurors, wore a slinky, metallic Ralph Lauren Collection dress paired with chunky platform heels, while Lara Stone also joined the glitter gang in a gold, Grecian-style wrap dress and flat gold sandals.

CLICK THE IMAGE FOR A GALLERY OF GLITTERING STARS:

Lara's footwear choice comes days after the Cannes Film Festival had to issue a statement after reports emerged that women were turned away from the red carpet at the Carol premiere because they were wearing flat shoes.

Also attending the world-renowned charity event, which has been held each year of the festival since 1993, were Karlie and Lara's fellow models Chanel Iman, Gigi Hadid, and Barbara Palvin.

Read More: See all the red-carpet looks from Cannes

Chanel stunned the crowds in a nude Zuhair Murad Couture princess gown , with a plunging neckline, tulle overlay and floral applique.

Twenty-year-old Gigi, meanwhile, wore a risqué Tom Ford dress, which featured a high collar and a vertical cut-out running down the torso, plus a thigh-high split.

CLICK THE IMAGE TO SEE THE GALLERY:

The evening's festivities were curated by fashion icon Carine Roitfeld, and guests inside were treated to live music from Mark Ronson, Imagine Dragons, Mary J. Blige and Charli XCX.

The black-tie gala is held at the Hotel du Cap-Eden-Roc, which is situated just half-an-hour's drive from Cannes.

Last year's event raised a record $35 million for amfAR, a foundation dedicated to ending AIDS through research, and which is chaired by Hollywood producer Harvey Weinstein and supported by his production company, The Weinstein Company.

Karlie acted as the event's chair for the evening, along with Diane Kruger, Natalie Portman, Sienna's fellow juror Jake Gyllenhaal, and F1 race driver Lewis Hamilton.

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