NWOT ASTR Boho 3/4 Sleeve, Lined Ivory/Cream Mini Dress w/ Lace Accents Small

Beautiful lace accent down front of dress and at ends of sleeves; back strap to hold in place for better fit; lightweight; lined; mini shift dress. Measures approximately 17.75” armpit to armpit & 32” shoulder to hem. 100% polyester; tag says dry clean - but 100% polyester?? Should be OK delicate cool wash…