Theory Cornflower-blue strapless midi dress in a textured, faintly pinstriped linen-look woven, in excellent condition (no size tag; fits like a small). It has a straight strapless neckline, a structured bust panel seamed to an empire waist, a softly A-line skirt and a long slit at one side that opens to a curved hem. An effortless summer dress for a beach club lunch, a bridal shower or a holiday dinner with flat sandals.

Rent for $20/week. Original retail price: $120, 83% off retail.