L'AGENCE Roxanne Tank Dress in Blue. - size L (also in ) L'AGENCE Roxanne Tank Dress in Blue. - size L (also in ) Self: 65% viscose 30% nylon 5% spandexLining:90% poly 10% spandex. Dry clean only. Partially lined. Hidden back zipper closure. LAGR-WD39. 60566 SPN. 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.