Regarding Byron's comment, I buy jeans at Goodwill or another second hand store where I can get stuff on the cheap.
Amazingly, the second hand places have tons of perfectly good jeans and shirts for 10 cents on the dollar so I don't have to pay top $$$ at the mainstream retail outlets.
By the way, if you want new stuff, here's a site that sells the old style:
http://www.rustyzipper.com/mens/shorts/1970
There are more on line sellers so just Google the phrase "Men's Vintage Style Shorts Or Swim Suits".
CD