Same here. I always sit at my computer nude. I was wearing tighty-whities again at work, but as soon as I change into my cutoff jeans the undies come off.
A black and gold bikini actually. It was out of curiosity to see if atleast my favourites in my large collection of bikini's still fit me. Fits like a glove actually, but the mirror says I need to lose weight.. Especially since the one I spent the most money on is hard now to breathe in. Bloody thing..
Blue bikini style undies. I like the bikini style. They go great with anything you wear with them (shorts, skirts, jeans, etc).