Mexicali blues white cotton button down tunic shirt

Mexicali blues white cotton button down tunic shirt. Essential boho casual style to throw on as a cover up over a bathing suit or leggings. Or just over a tank top when there’s a slight breeze at an outdoor dinner or drinks situation. I don’t know what to call it - a blouse, a tunic, a cover-up. It’s versatile so it’s whatever you want it to be! NWT - I bought it in Maine on a whim but I just never got around to wearing it. No flaws. Smoke free home