A strappy dress is one of the most versatile options for a summer party because it works in heat without sacrificing any of the polish the occasion requires. Thin straps, a fabric that moves well, a length that works whether you are standing in a garden or sitting at a rooftop table. The strappy summer party dress needs to look as good at the end of the evening as it did at the start which means fabric that does not crease dramatically and a cut that does not require constant attention. These are the ones that handle a full summer party without any drama.