Luke Bryan recently offered some solid advice to his two million Twitter followers, warning them against buying unofficial concert merchandise at his Farm Tour shows. Bryan tweeted, "Don't waste your money in the parking lots... These are fake Farm Tour shirts." The tweet included a picture of the unauthorized shirts, which were black T-shirts with his picture on the front and a list of tour dates on the back. (The official Farm Tour shirts are white with turquoise lettering.) Proceeds from Bryan's Farm Tour benefit small agricultural communities in the South.