Vintage B/W Mod Day Dress Double Knit Checkered Patter Dress

Bought from Etsy 13yrs ago, never worn-just collecting dust in my closet-not thick/heavy, unknown brand, no care instruction tag, just wash on delicate and hang dry, no stains, no snug, perfect condition, zipper working as it should be but as always this is vintage, handle it with care, the flower like on the zipper can be removed, I just added for convenience when pulling up and down the zipper. I'm 5'3 length is a little below my knee. I'm normally medium or large on dresses, this one fits perfectly.