Bra-baring Ladies

What a coincidence that both Chloe and Zoe lost a few buttons at the Prada book launch party! All kidding aside, while sneak peaks at lingerie and bras were all over the runways, (particularly Miu Miu Fall '09, which both ladies are wearing) it's definitely a look that should stay on the catwalk. How soon before pants-less, bra-baring ladies are parading up and down the streets of Anytown, USA?