The winner of this year's Miss Teen USA has admitted her mistake after being slammed for a series of racially offensive posts sent from her Twitter account Karlie Hay, 18, of Tomball, Texas, was given the crown Saturday at a lavish ceremony in Las Vegas. But shortly after the pageant ended, a Twitter user posted a screenshot of tweets that included the N-word, that Hay had sent to some of her friends in January 2014 and July 2013. Soon, many had taken to Twitter to express their concern that somebody who had posted racially offensive sentiments had just been billed...