Whatever you wear, you will be a gorgeous bride. That's for sure! I don't know which is #1 and #2 because it says #1 BELOW the first two images, but the second dress down, the one without the fishtail look is magnificent the way it just streams down from the waist. The fishtail one is less natural looking to me. It seems a little snug right below your hips, making the eye fall on that midrange between waist and where it's cinched in rather than on the graceful flow as the fabric cascades to the floor.
The second one is really pretty and flattering for your body. I think the first one is too poofy, in my opinion, but at the end of the day, it is what you feel pretty in and what you want your dress to be.
Both loo beautiful on you but I LOVE #2! You look very comfortable and at ease. Also the a-line fit is so comfortable for bending down to greet children, dance and eat! (I personally picked Aline for these reasons.)