Strapless reversible sun dress. 2 looks in one

Strapless reversible sun dress. 2 looks in one. Sea blue and green - one side with flowery Island 🌴 feel or preppy 70s on the other side with double stripes down the sides. Zippered in the back with tie. Great versatile travel dress. Mint condition. 16"across chest and 30" long from chest height. Intended to be closer to the knee look. No tags since it's reversible but I think this is a gap purchase. It was during a period that I loved all gap stuff.