Most of the places I go to for second hand clothes don't even have dressing rooms. I love buyind second hand clothes. They're comfortable, they're unusual, they're cheap, and I feel better that these perfectly good items aren't getting thrown into some trash dump.
I always take everything home and wash it.
I've even purchased shoes. I found my most favorite pairs of boots at Goodwill for 99 cents. They're italian, very soft leather, and I ALWAYS get compliments on them.
My most favorite pair of Levis cost me 65 cents.