Savannah in December

I think any dress style can be appropriate, especially if you will be holding your event indoors. I would suggest going and trying on all dress styles and figuring out what you like and what makes your happiest when you are wearing. It will be much easier from there. Alterations can always be done to add/remove sleeves or you could have a shaw/jacket if it’s cold.

Like Jeanie suggested, go and try on as many styles as you can during your bridal appointment. I'm from Georgia and know how unpredictable the weather can be, and especially in Savannah! One big factor will be whether your wedding is held indoors or outdoors, but if it'll be both, then I wouldn't stress on getting a dress specifically for the weather.

Try on dresses and be open minded and go from there! Sleeves can always be added or removed, and/or you can always buy a bridal cape or shawl!

Anything will go! Savannah is still pretty warm in December, so you could do sleeves or no sleeves! Get what you want!