45+ Chic Cancun Outfits What To Wear In Cancun: The Ultimate Guide Cancun Dress White What To Wear In Cancun Besides A Swimsuit 8 Outfits to Pack for Your Trip to Cancun Who What Wear. Add this eye catching piece to your next vacay look with the Cancun Dress! Its classic tie up halter neck, asymmetrical hem, and backless design will have you looking fab and feeling far out! Plus, the sheer material makes it perfect for a lightweight coverup so you can pair her with the cutest bikini for the ultimate summery slay! FABRICATION: 100% Polyester SIZING: Crystal's height is 162cm 5'3 and wears a size AU 6 US 2.