Vintage 1970s Rainbow Plaid Vest and Maxi Skirt Set, Russ Girl Size X-Small

Rainbow plaid set from the 70s that includes a vest and a maxi skirt. The vest buttons up the front and the full maxi skirt has a side zipper.  Brand - Russ Girl Content - I think it's cotton or a cotton blend Size - This is a children's brand, but when I looked through their old ads they said that they made teen sizes as well so I'm guessing that's what this is. The vest does have bust darts but it was small on my mannequin. I think this would probably fit an XS (Size 0) adult but please check all measurements to ensure fit.  VEST: Shoulders - 11.5" Chest - 16" pit to pit  Wasit - approximately 14.75" across Length - 16.5" but it goes down to 17.5" in the front, and up to approximately 15" in the center SKIRT: Waist - 12" across measured flat, 13" pulled taut Hips - approximately 30" across Length - 35" Condition - I don't see any flaws