We know if you washed your bra every time you had a little swear, you'd spend your entire life at the washing machine.  So how often SHOULD you wash your bra?

According to one expert, the correct answer is, wash it after you wear it seven or eight times.

A survey a few years ago found the average woman owns about 15 bras, and DOES wash them after she's worn each one about seven times. 

From Jezebel.com