Exist Black/Gray Tie Dye Tunic/Dress One Size

Exist brand, black and gray tie dye tunic/cover up/mini dress. Bell sleeves, elastic neckline. Fabric is not stretchy, is fully lined, and says one size. I would say one size up to about 2X, because I wear a 2X in lots of brands and it does fit me, but not much space. Gorgeous summer staple! Thanks for looking!