She's however got Justin Bieber and Taylor Swift hot on her heels with 72.9 million and 68.8 million followers respectively.
'But the other five per cent is work related or it's just to keep people in the know about where I'm playing or if I'm doing a show and I always get really confused.'
Despite being so popular on the microblogging site, Katy insists she likes to detach herself from the virtual space. Asked if she replies to her fans on Twitter, she said: 'Sometimes I do, I kind of do a lot more of it when I'm in the zone mode.
'Right now I'm in a relaxed, chilled vacationing zone, I've got my spanx on and I'm just taking a little break ...
'I think I have to find that balance between Tweeting too much and plus I have so many followers that nobody really wants me to fill up their timeline.'