A sleeveless linen tank dress is the simplest possible answer to hot weather dressing during a holiday. Linen breathes harder than any other fabric and sleeveless means nothing is holding heat against your body. The tank cut keeps it functional and unpretentious. A simple knee or midi length works for casual meals and low-key sightseeing. These dresses layer beautifully under lightweight jackets or button-ups when the evening cools down. Solid colors are the play here because the simplicity is the point and the comfort is the reward. The straightforward cut means you can actually move and bend and sit without thinking about your dress. These are the dresses that disappear on you because they are so comfortable you forget you are wearing one.