Wear leggings to the swap meet.
I love to go to swap meets and garage sales to find good bargains on clothes, but a lot of times it's hard to try on clothes- especially pants. Today I went to a great swap meet and happened to be wearing leggings. It was great because I could try on all the jeans without any hassles! People stared a little bit but at least my undergarments weren't showing and I found some awesome jeans for $5.