Depends on what YOU want.. I had a formal 30 foot train and I had a Jessica M gown. I will be married on the beach most likely next May, so am looking as well . I love the gypsy style and really don't want a long dress at all. ( but I am NOT wearing a bathing suit!!) I think its what you feel beautiful in vs what peeps say you have to wear,
Look for something that is YOU. Doesn't have to be white, doesn't have to be a dress.
Where will you be getting married? What will the weather be like? Any type of theme? Give your self a start point and see where it goes.! Fun times!!