Knock off designer handbags are extremely popular among those who love expensive handbags but aren't quite able to afford them. Though you probably want your knock off bag to look as authentic as possible, remember that fake bags carrying brand names are illegal. Company names and logos are copyright protected and cannot be placed on bags by third parties. You can, however, buy knock off designer handbags that look like the real deal and are perfectly legal. Beware of whether or not the item you're purchasing seems to be breaking any copyright laws.