Vintage 80s Strapless Sundress, Baby Blue Midi Dress, Drop Waist Dress, Bustier

Vintage 1980s sundress. Baby blue in color, 100% cotton. Lightly wired bustier on the top, drop waist, midi-length. Strapless with elastic back. Back half zip. Very retro and cute! Women's size XS (tag is marked 7/8 which would be a size 1/2 in modern sizing). It does have some rust spots (see photos) but lots of life left and wears well. Measures: 35.5" long 26" waist