EXCLUSIVE AT NET-A-PORTER.COM. When launching her label Tre, Natalie Ratabesi's first priority was finding craftsman who treat denim with the same care as haute couture. Flattering and comfortable, these 'Billie' jeans are cut in a boyfriend shape that sits low and loose on the hips. They're detailed with center seams and sporty dark-blue stripes along the sides. Channel the brand's street-style look with an oversized bomber and boots.