Charter Club Wool-Blend Grey Blue Plaid Maxi Skirt Size 18W Vintage (Runs Small?

Charters Club grey black and blue plaid maxi skirt womens size 18W maybe it runs small? Pease reference measurements to ensure fit. vintage? waist pulled taut is 20.5" flat across Modeled on my XS 5'8" mannequin side zipper closure no pockets 27% wool 39% acrylic 30% polyester 4% other nonstretch condition: preowned great wool skirt office career business casual modest workwear academia fall winter church casual plaid 1lb 11914