Karlie Kloss’ Elie Saab Spring 2012 Ad Campaign

Karlie Kloss Elie Saab Ad Campaign

Photos courtesy of Elie Saab

Seventies-chic: Karlie Kloss looks very Studio 54 in Elie Saab's Spring 2012 ad campaign.

We knew it was just a matter of time before Karlie Kloss popped up on our Spring 2012 fashion campaign radar.

Last year's breakout model shows no signs of slowing down with her gorgeous, glamorous, and grown-up shoot for Elie Saab's Spring 2012 collection.

Photographed by Cédric Buchet, the controversial stunner swaps her playful Victoria's Secret loungewear for sexy, '70s-inspired gowns in a rich mustard yellow, which she pairs with matching handbags, Lauren Bacall-worthy waves, a flash of leg, and those perfectly arched eyebrows.

Between this smoldering shoot and a 20th birthday looming this year, we'd say our teen model is most certainly becoming a woman.

Meanwhile, check out Karlie Kloss's latest Dior Beauty ad campaign.