Justin Bieber may have a gigantic fanbase, but hes no longer Twitters most popular celebrity. Both stars are still adding new followers every minute, but Perry seems to be rising faster. Shes presently maintaining 2,000 more followers than Bieber, and barring a backlash, could keep on climbing higher. Katy Perry (@katyperry) is now the most followed user on Twitter, passing Justin Bieber (@justinbieber) who held the title for nine months. — Eli Langer (@EliLanger) November 3, 2013 Lady Gaga was long the queen of Twitter, holding the crown since 2010 and setting a number of records in the interim.