Hmmmm, I lost 100 pounds several years ago (it took me a solid 2 years of religious dieting/exercise). I've kept about 60 of them off, as I was too thin and wanted to be a more realistic weight.
The biggest artifact of that, besides a few items of clothing that are wayyy too big now - is a bad case of stretch marks! Arms, thighs, hips - galore. My skin is otherwise *ha* mostly OK.
Why is it that weight is so easy to gain and so damn hard to come off. Then when it does, it leaves all these little snide reminders of it being there!