Iconix Brand Group has nabbed actress twins Mary-Kate and Ashley Olsen to star in its upcoming advertising campaign for the Badgley Mischka brand, the first time the stars will promote a brand outside of their own empire.

The Olsens, prominent faces on the celebrity circuit, will advertise the brand in fashion magazines such as Vogue, Elle, InStyle and Vanity Fair.

The campaign is the twins' first partnership with a luxury fashion house.

Mary-Kate said: "When I wear Badgley Mischka I feel sexy and feminine… Recently, we attended their fall fashion show. The clothes were glamorous, beautiful, colorful and fun."

Founders Mark Badgley and James Mischka said: "Ashley and Mary-Kate have grown up to become America's young style icons.

"They have an amazing sense of fashion and individuality that intrigued us. Ashley and Mary-Kate reflect the younger, edgier and more sensual glamour that we have incorporated into our latest fall collection."

Creative director Dari Marder added: "The central theme of the campaign was 'modern day Cinderellas.' Creatively, we were all about having the girls look gorgeous and elegant but not perfectly coiffed. It is a looser, more unrefined and approachable glamour."