https://www.google.com/search?oq=can+you+try+bras+at+store...
I would assume this company has a marked bunch as having been tried and sends those out first and they are marked as 'trial' bras.
Boxers go against your asshole. Bras, not so much. Women's swimwear – very fit dependent – includes a protective, throwaway panel for this purpose.
Tons of women's clothes are highly fit-dependent. Boxers mostly aren't.
That makes this even more fascinating to me, because while women apparently want to try them on so they can test "fit", whatever they are trusting to determine that fit is apparently causing them to buy the wrong bras most of the time.
Of course, it's also not clear if this is intentional (IE they uy the wrong bra size thinking it makes them look better or whatever), or accidental.
Interestingly, reading the results of that study, it could be they don't care. The study finds that various forms of pain are not correlated with improper bra size, so it could be women just wear what they think makes them look good, and since it doesn't cause any pain, they don't realize it's not the right size.
It turns out that just because something doesn't hurt, and looks good, doesn't mean it's good for you.
My naive, non-boob-having understanding is that using the wrong size will cause your boobs to sag faster, as well as causing other medical issues, even if it doesn't cause pain.
http://en.wikipedia.org/wiki/Ptosis_%28breasts%29#Bras_don.2...
I'm not sure if this is still the case, since I no longer work at A&F and don't go to Gilly Hicks, but my coworkers at the time were pretty excited, since finding well fitting bras can be very difficult.
And I can't resist but to point out the awesome fact that you can actually wash clothes you bought. (That, and bras don't come in contact with waste products. )
And if you ARE actively lactating, the last thing you want to do is go try on bras.