^
Way chunky. You can't tell me they're the same boots. He must've had three different pairs for the three outfits (Hoth / Snowspeeder / Bespin).
Ha, I was just about to post that photo. There's a difference between boots when feet are in them, for sure. Also some of the Hoth scenes with the Wampa or press photos Luke doesn't seem to be wearing the full outdoor gear on, fewer layers maybe. When you see him out in the cold, his hoth suit is bulked up.