I totally feel you. Even though I know I look thinner than at my highest weight, in the mirror I still see the same person - because I used to suck in my stomach when I looked in the mirror! So I feel like I look the same as I always did, but I know that before I was in denial about how big I was.
I also agree with pictures being difficult - a lot of my friends take pictures when we're swing dancing, and they are the least flattering pictures EVER. I do NOT want to be tagged in a picture where I look fat AND sweaty.