Tisha, your wedding dress is beautiful! From the picture it looks like a slight sweetheart line and it think it compliments your daughter's dress perfectly! (or the other way around LOL) Your daughter is such a cutie! The colors look great together.
And about having second doubts I think we all have them. I bought my dress, and when I got home I basically had a nervous breakdown. I had bought a dress that was completely different from what I had planned, it was much heavier, and I scared myself. But after putting it back on again, I realized why I bought it in the first place. I loved it and how I felt in it! I think it gets a little nerve wracking because you see all these other dresses and other brides. But you choose the dress for good reasons (even if you don't remember right now!). The dress is stunning, it hugs your curves and the corset is great (there are no rules about how big/small the 'v' should be- so as long as the dress fits. It will be perfect on you) Sending hugs!