Blue Bell Dainty Floral Prairie Dress with Bonnet

Prairie dress WITH matching bonnet! White with blue flowers. Lace details. High neck. Little house on the prairie. Old fashioned day. In good condtion. I AM NOT SURE THE SIZING. The only size indication in the dress says “12”. I do not know if this is a kids 12, a women’s 12, or what. I have included measurements for reference. Based off these measurements it seems like it would be a women’s XS or kids XL Pit to pit: 16.75” Length: 45”