Polka dots are a timeless and playful print that is perfect for a summer wedding guest dress. Opt for a dress with a classic silhouette like a fit-and-flare or a wrap dress to complement the polka dot pattern. Pair it with some colorful heels and a clutch for a fun and stylish look. Whether it's a garden party or a cocktail wedding, a polka dot dress is a versatile choice that will make you feel feminine and fashionable.