Soft florals swirl across the Free People Cassie Girl Slip Dress to create a fluid design with a carefree feel. High side slits and caged back straps further its subtle sexiness.. 100% poly. Unlined. Crisscross back detail. Side seam slit. FREE-WD1170. OB571945. Free People invokes a spirit of femininity and creativity. Throughout their line of sweaters, tees, dresses and more, each piece incorporates a high level of quality and originality that reflect their adventurous it girl. With all that constricting in the world today, your clothing Free People says your clothes don't have to be. Be yourself, be creative, be free.