For one thing, I'm wearing the same corset in both photos, and last year it gaped open in the back and wasn't even laced for the last 3 spaces near my hips. This year it laced all the way down with no skin showing on my shoulder blades!
November, 2013; ~155 lbs:

August, 2014; ~140 lbs:

And as a bonus, here I am rocking the new costume I just made:




