Really, it was pure ingeniousness on her part. Forbes has a great article on the collaboration that you can read in full here. But the most exciting part is this:
Apparently she and Brin met at a conference this summer and figured they should push fashion and tech further into the future. Indeed, DVF clothing is strongly feminine, always refined, and the models who wore the glasses in pink and white versions pulled it off with aplomb. (Some wore glasses that recorded the whole show, and the footage will be made into a short film available at www.google.com+DVF on Thursday.)
You can watch the show from the model's perspective. HOW FREAKIN' COOL IS THAT??