Do you need to throw out your underwear every 6-9 months
3 Ways to Keep Your Underwear from Showing - wikiHow
Adaptive Panties for Women, Side Fastening Underwear
Almost half of people don't change underwear daily: study
Adaptive Panties for Women, Side Fastening Underwear
Experts say no need to replace underwear every 6 to 9 months
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How to stop my underwear from sticking to my ass after I have sat down - Quora