I don't think not wearing a bra to a wedding is tacky somehow, lots of women in strapless or deep v dresses don't wear bra's. In fact, I would say wearing a dress to an event is the one occasion where if you can get away with it, it's perfectly acceptable to not wear a bra. If a girl can get away with it, i'd much rather see her wearing some sort of event attire than if she's just running errands or something in which case, there is no need to go without! Anyway, i'm not sure that makes sense but either way, I think she's small enough to get away with it, plus the dress is black which makes it easier to hide PLUS she could easily be wearing one of those things that you stick on that gives support but isn't a bra per se. I like that shot of her in the brown boots with the all black outfit but seriously all the looks I see it's like why kate why. It's almost like she goes out of her way to find things that don't flatter her body. She dresses so mumsy it hurts.