Backless sundress/beach cover-up

I’m pretty sure this is made to be address and I have worn it that way but I also really like it as a beach cover-up especially if you’re going somewhere like a casual lunch afterwards. Perfect for vacation! Breezy fabric with adjustable straps It’s one size fits all and would probably fit S, M, or L (I am typically a M or L for reference) The pattern is mainly purpleish reds and blues with an off white background It is on the shorter side so I won’t suggest it for someone very tall