NWT. Even though I already know one-piece clothing items (bodysuits, rompers, etc.) never fit me, I bought this on a whim. Maybe because it really is stunning. Anyways, you can benefit from my bad decisions. From the Yitty website: This sexy, semi-sheer bodysuit smooths and tones all over with innovative bra support, a breathable mesh silhouette, and adjustable snap closures. Designed for ultimate versatility, it’s lightweight enough to be worn as an under layer or shown off. Features No-Show Bathroom-friendly adjustable snap closure Zoned support panels for extra shaping Light smoothing compression Partially lined coverage Three row double-snap gusset closure for the perfect fit 82% Recycled Polyamide/18% Elastane