The other night, an interesting discussion took place in my dorm room. One of my roommates asked the others present if openly taking off her bra in our room would make us uncomfortable. Living in an all-girl's house with very limited space, some levels of nakedness have to be accepted out of pure necessity, but we always manage to keep something on our bodies in the process.
The common feeling in the room up to that point had been "We're all girls here, we don't care." However, looking around the room, we each realized: We may all be girls, but we are each our own person with limits on how far familiarity between the same sex can be stretched without it becoming inappropriate.
So there's something that isn't often discussed: modesty between people of the same sex.