Robin Thicke, Demi Lovato & More Celebrity Twitter Pictures (PHOTOS)Self-Portraitists HP HED: Best Celebrity Twitter PicturesRobin Thicke, Khloe Kardashian, Ludacris, and more of the best photos the stars tweeted this week. Victoria KezraUpdated Jul. 11, 2017 8:30PM ET / Published Sep. 07, 2013 6:21PM ET