Kim Kardashian Flaunts Legs in Canary Yellow Dress at amfAR Gala

Kim Kardashian poses as she arrives to attend the 2012 amfAR's Cinema Against Aids on May 24, 2012 in Antibes, southeastern France. Credit: ALBERTO PIZZOLI/AFP/GettyImages

Getting leggy with it!

On Thursday night in Cannes France, Kim Kardashian chose an ensemble that channeled Angelina Jolie's leg-baring Oscar look -- times two!

At amfAR's Cinema Against AIDS gala, the Keeping Up with the Kardashians star flaunted both her legs in a canary yellow Elie Saab silk crepe gown, which featured two hip-high slits. She paired the cleavage-hugging dress (which retails for around $4,794) with a diamond cuff bracelet, black heels and chandelier earrings.

To top off her Old Hollywood-glam getup, the 31-year-old styled her dark brunette hair in side-parted, over-the-shoulder waves and sported a bright red lipstick.

The swanky charity ball marked the close of the star's jaunt in France. Since Wednesday, Kardashian and her hot-and-heavy beau Kanye West, 34, have been spotted hopping around the city's events together. They packed on the PDA while grabbing ice cream and posed together on the red carpet at West's Cannes Film Festival premiere of his art film/art installation, Cruel Summer.

According to a source, the couple "were inseparable" at the after party for the flick, one of the first projects of West's Donda creative firm. The twosome were "kissing in the back the whole time," the source tells Us Weekly. (West's buddy Jay-Z, sans wife Beyonce, showed up to support his frequent collaborator.)

On Thursday afternoon, the couple now dubbed "Kimye" hit Nikki Beach La Plage with a group of ten--though an onlooker says they "only spoke to each other."

"They kissed!" the witness shared. "He was hugging her from behind with two protective arms around her waist . . . They looked totally in love."