Hey Chanel!I'm pretty sure that's a Stella McCartney jumpsuit.
Here's the link:http://www.style.com/fashionshows/collections/S2008RTW/complete/slideshow/SMCCARTN?event=show1622&designer=design_house24&trend=&iphoto=21
I just don't get the whole jumpsuit look. I haven't seen one that was flattering yet. I think what I really hate is the ridiculously plunging neckline.Just doesn't work for me.