CELEBRITIESPhotos: InstaglamForget album covers and ad campaigns. The hottest celebrity pictures are on your cell phone.by Horacio SilvaOct. 1, 20131Follow their lead, if you dare.@giseleofficial2@beyonce3@justinbieber4@jessicasimpson5@_mileycyrusx926@ritaora7@ritaora8@kimkardashian9@kimkardashian10@badgalriri11@badgalriri12@badgalriri13@amandabynes