I have just invested a King's ransome on some new bras from Bravissimo.
I have just looked on the care instructions on their website, and under "how often should I wash my bras", it says there's no set rule, but they'd recommend every one to two weeks.
I'm not sure if they mean after continuous wear, or that you wear more than one bra during those 1-2 weeks.
I've always washed mine after a maximum of two wears. Maybe that's why mine have never worn well - I've been over washing them.
How often do you wash yours. And do you machine wash or hand wash.
If you hand wash, what detergent do you use?