MILLY Margot Bikini Bottom in Navy. - size S (also in L, M) MILLY Margot Bikini Bottom in Navy. - size S (also in L, M) Self: 78% recycled polyamide 22% elastane Lining: 82% polyamide 18% elastane. Hand wash. Pull-on styling. Lightweight swimwear fabric. Item not sold as a set. MILL-WX253. 18OY26. The MILLY collection epitomizes bold, advanced contemporary fashion with a feminine edge. Designer and founder Michelle Smith transforms classics by merging American sportswear silhouettes with distinctive Parisian atelier techniques. Smiths eye for impeccable detail, use of luxurious, cutting-edge fabrics and precise tailoring have made MILLY a cult favorite across the globe.