Cristiano Ronaldo Youtube: 8,210,381 Facebook: 52,001,830 Twitter: 14,896,814 Taylor Swift Youtube: 1,094,533,992 Facebook:36,910,598 Twitter:21,823,789 Britney Spears Youtube:1,304,060,207 Facebook:22,075,489 Twitter:22,492,848 Barack Obama Youtube:288,731,913 Facebook:34,224,604 Twitter:24,498,889 Eminem Youtube:2,171,068,711 Facebook:63,705,386 Twitter:13,169,459 Shakira Youtube:1,817,990,107 Facebook:57,700,329 Twitter:18,986,980 Katy Perry Youtube:1,356,038,478 Facebook:49,482,595 Twitter:30,054,218 Rihanna Youtube:3,109,327,300 Facebook:63,957,476 Twitter:27,270,182 Lady Gaga Youtube:2,337,223,009 Facebook:54,289,208 Twitter:32,110,207 Justin Bieber Youtube:3,206,309,887 Facebook:48,952,702 Twitter:31,458,839