Morning Nikki - I too think the 4th dress looks amazing on you.
You know what I was thinking, maybe you should book yourself in for a "make over" you know like a little spa package followed by something different with your hair, a proper facial etc. You will feel tonnes better, thats what I do when I feel stuck in a rut.
I think this event should not be stressing you out like it is, you should be having fun!
I think you should get a new dress all together too -REMEMBER YOU DESERVE IT...an idea would be to go to your local department store (debenhams of house of fraser are quite good for this) and see a personal shopper who will help you pick a perfect dress for your body type.
You are very athletic, and as for the belly issue, well I have the belly to end all belly's thanks to my first daughter being a whopper and not knowing the magic of pilates in pregnancy the first time around, it only got bigger with all the weight I piled on second time around and it's still my most feared part of my body, so I feel your pain! BUT I am working on it...did you say you have already had one tummy tuck?
I know what you mean about the fear of not losing, I am fairly sure I have only dropped a 1.5lb this week (against my desired 3lb) but you know what - stressing yourself out even more will not help you lose weight, so I just say - ok, there is always next week. It's not defeatist, it's realistic I like to think.
Nikki - have a nice saturday and stop whipping yourself, you will end up with no skin left