Vintage 80’s Knit Shirt Dress with Rainbow Trim

Cute, casual early 80’s knit dress (I’m guessing polyester or cotton/poly blend). In overall very good condition. Has light pilling and a small spot on the hip of the skirt. Measures 16” armpit to armpit, elastic waist is 12” unstretched and stretches comfortably to 15”, hips 20”, 44” long. Shown on a size 4 mannequin.