Maybe Gaga can go to Google+: Rihanna took the lead in Facebook fans, edging out Gaga's 40,544,276 with 40,566,359. She updated her status to "40 mil! 1 LOVE #RihannaNavy." Gaga, however, still reigns supreme on Twitter, with more than 11 million fans, and she's the most-viewed YouTube star despite being banned. Rihanna has 6 million Twitter followers and is the third-most-viewed person on YouTube.