My husband is in a wedding in October. The wedding is in San Diego, CA. He will be wearing a tux. The couple suggested evening gowns or cocktail dresses. The wedding is at 2 pm. I feel like a gown for an afternoon wedding is too formal, but with my husband in a tux I'm not sure a cocktail dress is formal enough. No matter what I select to wear I will have to buy a dress. Any recommendations on what would be better suited? Their invitation was pretty much a post card with their wedding website on it that says to rsvp online so that doesn't seem very formal to me.