I always try and keep up to date with Pokemon news and events...and recently on Pokemon.com, I found out about the new thing called "Pokedex skins". Maybe I am behind the times, but I never knew that there were pokedex skin changed within White and Black V2 --- and supposedly, the Bianca skin is the second of three which features famous trainers from the Unova Region.
The first skin they released was Hugh, and the last Trainer and probably most popular will be the Cheren skin. Still, in order to get this little deal, you will need to know how to use the Global Links on your game as well as having a little bit of in-game knowledge, and possibly some knowledge on the Anime as well.
While the details are posted on the link above, I guess you have to use the Global Link, your game must be registered with the Global Link, you must choose this promotion, and then you must fill in the missing word to make a quote match up with something Bianca has said. Sounds strange.
While I, myself will probably never do this event/promotion because it does not sound worth my time (just for a Pokedex skin), I know that there are some people out there that like these sorts of things...in-game fashionistas and this would tickle their fancy. Idk.
Anyways...that's all I have for today.