Instagram is one of our many obsessions, and celebrities have likewise utilized the social site by sharing their personal photos. Justin Timberlake is the latest star to join and has already attracted more than 100,000 followers while Beyoncé's Instagram induction came on Election Day 2012, when she showed her support for President Obama. Pop queen Madonna is also new to posting personal snaps alongside insta-regularsLauren Conrad, Zooey Deschanel, Jessica Albaand and Nicole Richie.