Pierre Balmain Button Down Denim Dress. - size 40/6 (also in ) Pierre Balmain Button Down Denim Dress. - size 40/6 (also in ) Inject a luxe touch to your everyday denim with Pierre Balmain's Button Down Denim Dress. Designed with a ruffled high neckline that leads into the label's signature gold tone buttons, this mini is finished with a beautiful lived-in wash.. 98% cotton 2% elastane. Unlined. Signature gold-toned snap button front closure. Slight whiskering and fading detail throughout. Ruffled fabric trim. 5-pocket styling. PIEB-WD9. FP37202J. Pierre Balmains fashion roots run deep. The French fashion house was a post-war WWII phenomenon turning out gowns for Hollywood starlets. These days Pierre Balmian is the purveyor of Paris-chic. The line designs mens fashions that are cutting edge and luxurious all in the same momenta testament to the belief that some things never die.