<human>: Summarize the given text in a few sentences.

UPDATE: Here are some before and after... the before are from a trip I took over Christmas, and the after was me last night just before leaving! 

I've been very slowly losing weight since November, and am down about 20/50 lbs.. most of which has come off since the first of the year. Two years ago when I was at my absolute fattest, I broke down because my normal "go to" cocktail dress didn't fit me and I had to go out one day before my boyfriend's company holiday party to buy one.. at Lane Bryant. Even though it was "just" a size 14, it was humiliating and pretty upsetting to me. Ever since, though, that had been my "go to" cocktail dress. 

Boyfriend was trying on his suit to make sure nothing was stained, etc and suggested I should go try on my dress. I did and.. it not only doesn't fit, it's almost tent-like on me. I can't believe at one point that I "filled" it out. The gala we're going to is happening tonight so my dress shopping will be last minute, but I'm still so excited!
<bot>: had to get a cocktail dress for myself at my fattest that I wore for two years, for the first time since starting to lose weight I tried it on and it's way too big.