Universal Thread White Western Lace Trim Sun Dress Straps Cover Up NWT 4X. 55% Linen 45% Rayon Unlined Back button closure Side pocket Mini length Material: 55% Linen 45% Rayon Garment Length: Mini Garment sleeve style: Sleeveless Straps Care and Cleaning: Machine Wash Cold Tumble Dry Hey, this is not lined. So sure thing you can wear flesh colored undergarments, or you could wear this as a swimsuit coverup. Thanks for looking! From a nonsmoking, pet loving, occasional candle burning home. Ships with recycled materials whenever possible.