Gabby Giffords Joins InstagramThe former congresswoman from Arizona, who was shot in the head in 2011, signs up for the popular photo-sharing social network.By by Mike HayesBuzzFeed News ReporterPosted on September 5, 2013, 2:42 pmTwitterFacebookLink Gabby Gabby Hey! View this photo on Instagram Follow Gabby Giffords on Instagram instagram.com