Ahead, we break down everything to know about what to wear to a casual wedding as a guest.

Semi-formal wedding attire is the marriage (so to speak) of formal and casual wedding guest attire, and is differentiated from cocktail in that it can be a daytime event, Gottsman says.

A dressy casual dress code for a wedding or party can be confusing! Etiquette expert Elaine Swann explains what it means and what you should wear, here.

Women have it tougher than men when trying to figure out how to dress smart casual, particularly given high heels and a fancy dress can tip you into black tie territory. Getty Images ...

A I'm afraid that your combination is too casual to work for a "cocktail attire suggested" wedding. Those words on an invitation call for something dressier; not as formal as a tuxedo, but more ...