This one has intrigued me for ages.
I noticed that when I was obese, my own perception of other women's sizes/weight was different to what my perception is now. I've noticed it in the past, too.
For example, when I was a size 18-20, I thought anyone less than that was 'thin'. If someone was, overall, say a size 10, but had a few lumps and bumps here and there - I wouldn't notice the little bit of flab because I'd think they were 'skinny' overall. But the slimmer I got, the more I realised smaller people weren't 'perfect' either - and the more I noticed things like 'Oh she's got a big bum' or 'She's got a little roll of fat'. And people on TV say, you have seen for ages - suddenly you realise someone you'd always thought of as being 'average' or 'OK' actually is fatter than you thought (I don't mean someone who's gained weight - just that your perception of them changes as you change).
Anyone else, or is it just me? Because it seems to me that as my size has changed, my perception of other people has too. I don't mean I've got cattier I just mean I genuinely do seem to have re-categorised people, size-wise and your perception of size generally seems to shift automatically, even when you're not that aware of your own weight change. Does that make sense to anyone else?

Like skinny peeps with cellulite! I laugh! Mwahahahahah
since I have relatively little as long as I make sure I drink my water! 
I felt so uncomfortable about it.
But I like to think it's because there's muscle in there!