Twitter Counter, which tracks and analyses Twitter usage, said on Thursday that, in accordance with its algorithms, the Biebs will overtake mom Monster around 4:23pm (2123 GMT) on Sunday.
"For now, Kesha influences lead in follows alone," it said in an email to subscribers. "Bieber's account, however, is growing at a rate."
Rhianna, who's led the Twitter pack since August 2010 when she outpaced fellow pop star Britney Spears, had 33,159,886 followers -- and Bieber 33,102,814 -- shortly before 4:00pm (2100 GMT) on Thursday.



