JSKs and skirts I usually wash every 3-4 and sometimes if I don't have any time on my hands, 5 wears. Things that touch bare skin tend to get washed more often. Socks definitely get washed after every wear! Otherwise, YUCK!
So Lolitas- Next time you have a question, and you're embarrassed to post and ask- just get over it and ask. You know other people are probably wondering the same thing.