Polyester % 95 Spandex% 5 Please Note: Model is wearing a 1x *This dress is made of lace fabric - the dress is lined in body and the sweetheart neckline. The is see thru on back, arms & shoulder. Undergarments are not included.  *Dress fits like a glove, although it does have stretch it does not allow for ordering a size down. It is very true to size. Final Sale items are not eligible for return or exchange.