Dress dilemma solved!
So, after FI said he didn't like the dress I had picked, I just wanted to be SURE. I went to the bridal shop yesterday to try it on again, and to just try one more dress that FI had seen a picture of and loved. Well, it turns out he was right! The new dress is even more beautiful than the other one, and the shop was nice enough to let me use my deposit for the new dress since they hadn't actually ordered the other one yet :) This new dress is the same beautiful pink peony color that I loved and is so much more flattering. I feel so much better now!