CUTE pale blue, tan, white 60's knit dress!!

21 inches armpit to armpit 18 across waist But it is stretchy. There's no size tag, but I would call this a 12 or a 14. I'm a 14/16 and i would wear it, but i like my knits tight. The thing that interested me most about the dress is that it is sewn on the bias, sideways. The fabric is turned the direction of the color block.