A sleeveless shift cover up dress is the answer when you want a cover up that actually works without being fussy about it. The tank silhouette means nothing is holding heat and the straight cut means nothing is clinging to damp skin. Cotton or linen shifts on easily and dries quickly enough that you can actually wear them while still slightly wet. A simple knee length works for all body types and all ages. Solids are the play here because the simplicity of the construction is the whole point. These look better the more worn-in they get and the more imperfect they look the better they actually look. Pair with sandals or go barefoot. The ease means you just wear them instead of overthinking the choice.