How long does it take to change a girl's bra? I have a lot, and I was eliminated in four years. What about you? (Girl answers)

I suggest you change it every three months, even if you wash it, it won't be clean. There will be mites. And take it out to bask in the sun when the weather is good. If the time is too long, you will get some breast diseases. And don't buy too bad, the price above 100 is more suitable, and dozens of dollars of cotton are recycled, or inferior cotton contains other carcinogens.