Attire: Beach Casual Wedding Attire Casual attire for a beach wedding is kind of like what you'd wear to a nice dinner on vacation. Usually, flip-flops and denim aren't appropriate, but this attire is more relaxed than other wedding attire. Men can wear khaki or chino pants, and sometimes even shorts (if you're not sure about shorts, play it safe and skip them). On top, men can wear a button-down shirt (short sleeves are acceptable) or a solid-color polo. Women can wear sundresses or dressy separates, like a nice top and skirt. Instead of heels, try a pair of strappy or platform sandals.