Vintage St. Gillian by Kay Unger 2 Piece Tank Dress, 1970s Mod Floral Pattern

Vintage St. Gillian by Kay Unger abstract floral tank dress with matching long sleeve, tie waist jacket. Tank dress is red on the top with the blue, red and white floral print on the bottom. Gathered, A line stretchy waist. Can wear with or without the jacket. Jacket has the floral print with a tie closure at the waist. Tagged vintage size 12. Under the knee lenght on me (I am 5'2"). I would estimate it to be a size 6, but see measurements to ensure proper fit. Approximate measurements: Dress: 13 1/2" armpit to armpit x 9" waist (it is stretchy at the waist) x 40" long Jacket:18 1/4" armpit to armpit x 17 1/2" long Measured flat. Dress zippers up the back. No fabric content, but feels like polyester. Excellent, vintage condition. No rips, holes or stains. Machine washable. I have not laundered. You would want to wash before wearing. On the inside of each of the tank top straps, there is a set of snaps safety pinned. I am not sure why they are there, but I am leaving as-found.