I sent Ariana Grande a letter November 24th, 2012. I received this signed (authentic) picture April 3rd, this year. I used this address: Ariana Grande 265 S Federal Hwy Suite 331 Deerfield Beach, Fl 33441 USA - Zoomed in on the autograph. - The picture with autograph. - The letter, picture and a sticker with her Twitter username ( at ArianaGrande). I sent it in a normal envelope and received a normal envelope (same size as the letter) back with a "Do not bend" stamp, my address (written on it), and Arianas address.