I also found this from The New York Times "Pulse"
“It is a very complex aesthetic technique that is practically impossible to create on one’s own,” she said, noting, too, that it requires a specific length, width and shape of the nail, which only a few people have (Dita Von Teese, among them). So what’s one to do? Well, use fake ones. “We applied them on every model at the show,” Ms. Deslande said.