Heading to a summer beach wedding and want to keep it classy without overheating? These 10+ guest dress ideas are perfect for oceanfront ceremonies and breezy outdoor receptions. From light, elegant maxi dresses to chic short styles in breathable fabrics, this collection blends formal charm with beach-ready ease. Whether you’re walking in sand or dancing under string lights, these dresses strike the perfect balance of polished, simple, and effortlessly summer-stunning.