Vintage 1960's yellow Shifts Internationale dress

True Vintage 1960's shift dress in a light yellow with a white floral pattern. Has a zipper up the back, is sleeveless, and has a 4 button detail on the front of bust. This dress has no label, but was hung with 2 other dresses by Shifts Internationale of Miami and I am certain it is made by them. I Included pictures of the old size label fabric that matches one of the other dresses, and also the zipper that matches the other Shifts Internationale dresses zippers. The fabric, pattern, and zipper all point to that designer. It is in perfect condition with no signs of wear other than the buttons showing some slight discoloration or dirtiness (pictured). Wish I could fit into this retro 1960s dress! Measurements bust: 17" waist: 15 1/2" length: 37"