Bugujo - Boy, that bathtowel thing was what made me first realize years ago that I was really getting pudgy (all the while I was ignoring the clothing sizes and the mirror of course). It was so depressing to no longer be able to get a standard towel around even the waist. I had a "bath sheet" that I used until it went threadbare, then realized I would just have to stick with beach towels if I wanted to be wrapped up (and walking room to room naked was not high on my list).
That will be a welcome sign of progress, though it is slow in coming.