Like some others, I don't and never have worried about wearing sleeveless shirts. Living in the humid South, there is no way I'm going through summers wearing long sleeved shirts, especially 100+ pounds ago when I used to sweat all the time as it was! Now I'm usually cold all the time so the sweating is not an issue. Now I only sweat when I want to. That's really a nice perk from the weight loss.
But my pet peeve are my legs! The saggy skin on the upper thighs don't bother me TOO much (longer shorts and pantyhouse with dresses/skirts takes care of that issue) but the size of my calves are irritating to me. Turns out now that I've lost all this weight, I'm a pear shape, and my legs are the largest part of me. I was so excited back in the winter, thinking that since I'd lost weight, I would finally fit into a regular pair of knee-length boots. It was so frustrating and disheartening to go to three shoe stores and not be able to find a single pair that fit!
On the plus side, with all the running and biking I do, I am finally starting to see some muscle definition on my calves, but they aren't the shapely limbs I'd like them to be. Ah well. They are strong, though and I'll take that over shapely anyday.