Nicole Fox, who won Bank's reality contest America's Next Top Model last year (09), will feature on print and multi-media ads for the Brit.
She's the first Top Model winner to land an international campaign.
Fox tells WENN, "It seems Tyra's risk is paying off."
The model, who admires Kate Moss, now has her sights set on working with high fashion photographer Steven Meisel: "If I ever modelled for him, I'd be blown away."
And she hopes her latest big break could bring her to the attention of movie hunk Robert Pattinson.
She adds, "I have a crush on him and I met him last year in New York during his promotional tour for New Moon."
Fox might get the chance to run into the star again next month (Feb10) as both are expected to be part of New York fashion week.