1 & 3 look like carnival float cr*p.
2's ok, but trains too big and to be honest completly the wrong shape for you Meg.
I remember Photos you showed of yourself and you certainly aren't a tall stick insect nor are you a saggy barrage balloon.
Since you're pettite you'll need something that'll be closer to your body, without huge pleats or flounces, that'll make you look taller.
Straight vertical lines will force a mental image of additional height.
Keep away from too much flowery lace, use it only on accentuations, centre panel or fine collar detail and for the love of all things holy avoid pom poms likethe plague.
(If your wondering how I know all this, Brother-in-law and I did a lot of wedding photos shoots back in the day.
We got to see a lot of wedding gowns that DIDN'T work and some that were jaw droppers.
However trying to take pictures of a 6 month Pregnant Bride in fluffy lace is a memory I would dearly like to forget.)