O.k., number of bras is surprising! I change mine everyday. Not necessary?

It does depend on how often you wash I suppose! The more often you wash, the less likely it is that you will need more than 4 everyday bras. Good bras are expensive and 4 would be the absolute minimum. This excludes bras for sport and special occasions though. It also may be possible to wear a bra for 2 days in a row.

I often wear my bras three or four times before washing. Of course, I rarely wear them for longer than 4 or 6 hours at a time. I work from home, and have a small chest, so I pretty much go bra-less most of the day. And if I go out with friends and am wearing multiple layers–a long-sleeved tee and a short-sleeved top, for example–sometimes I’ll skip the bra, too.

[...] Gap and Gap Body – you’ll find sweats, comfy knits and underwear marked down 60-70%. Remember not to ignore this portion of your wardrobe – checking your underwear regularly and lounging with style increase your style quotient. [...]

I am also surprised by the number of bras. I have always changed mine everyday (and I don’t think I’m particularly stinky!)

I just got out of a huge purge about a month or two ago (transitioning from a “kid” wardrobe to one I can actually use in the real world. about time right?) and I actually got fitted for a bra. I found out that I’ve been wearing the dramatically wrong size this entire time!!!
Unfortunately that means I need to go out and buy all new bras which are EXPENSIVE. But ladies, seriousily, go get measured or learn how to do it your self. It really does make all the difference in the way your clothes fit and how you feel.