I'm not sure how I feel about this. The pros, of course, would be that you'd never lose your cellphone (that is, until you took off the dress).
The cons, however, would be rather significant. What if you're in a meeting and forget to turn OFF your dress? What if your dress gets caught in the rain? What if you're doing the Macarena and accidentally call your mother repeatedly?
You be the judge.
The Little Black Dress of the Future Doubles as a Cellphone