Burda Style Beach Dress Hard to believe: a rectangular piece of fabric with side buckles turns into a fancy, backless sun wrap. Variant B with added flounce gives special swing. could use this pattern for wrap around towel.
Women's Graphic Tank Swim Cover Up Dress - Black - XS - Xhilaration
Women's Woven Kaftan Swim Cover Up - Navy/White (Blue/White) - M - Merona