Women's Underwear Dress Slips Adjustable & Versatile Backless wedding shaper bodysuit with Balconette Cups Wedding dress dilemmas: What's the best underwear for a backless weddi Sabina Motasem The piece your wardrobe's been missing. Designed for every dress, from minis to maxis, with adjustable compression, built in underwear, and smoothing you can feel (especially through the lower tummy).