Ladies, your bra is not an extra pocket. For those of you who don't believe me, let me say it again. Your bra IS NOT an extra pocket.
I mention this because, today, I saw some fat lady reach into her bra and pull out her wallet, keys and cell phone. She didn't just reach in and pull them out. She had to go fishing. It was a solid ten seconds of "feeling around" before she was able to locate all of her stuff. Hands down the grossest thing I've seen in a while.
I know, you see women in movies pull things out of their bras all the time. This does not make it appropriate. Odds are they are way better looking than you, and they are pulling out something appropriately sized, i.e., not their car keys. So, unless you are crazy hot and stashing a few hundred dollar bills, don't even consider it. Even then, maybe just bring a wallet.