L'AGENCE Denise Contrast Back Shirt in Black. - size M (also in ) L'AGENCE Denise Contrast Back Shirt in Black. - size M (also in ) Self: 100% rayonContrast: 100% silk. Dry clean only. Front button closure. Chest pockets. Buttoned sleeves. Contrast semi-sheer back detail. LAGR-WS119. 4769 XBK. Launched in 2008 by designer Margaret Maldonado, L'AGENCE operates off of a simple concept: washed silks, Japanese and Italian fabrics. Over the years, Maldonado has designed dresses, tops, bottoms and knits from the finest fabrics with the most modern and appealing cuts.