My sister is getting married late next year. It is an outdoor, daytime wedding and as such she needs to be prepared for the hot, hot heat. She may be well served by these dresses from local "bridal design company", Allure Couture: firstly, The Valentine. (I think it should only be worn with a Princess-Leia-meets-Rapunzel do, as with the model in the photo.) Alternatively, there is The Ophelia. Described as a "cool mid summer wedding gown", you could easily replace the word summer with "riff" or "section". Check them out and let me know what you think.