I am really liking the trend of a bit of bra showing. I don't mean in the skanky, let everything hang out kinda way... but in a more demur, seductive, show a little, not too much kinda way.
I however do not think this would suit a girl with a larger bust (like myself), but on the right bust I think it looks oh so cool.

Here are a few looks, that are oh so right: