Capitol pop star Katy Perry has officially become the first person to hit 90m Twitter followers. She is followed by Def Jam's Justin Bieber, whose account boasts 83.8m followers, and Big Machine's Taylor Swift, who's at 79m.

Interestingly, her Top 5 Most Retweeted tweets in the account's history are all about supporting other artists; in fact, three of them are related to One Direction. Apparently, together, the KatyCats, Directioners, Beliebers and Lovatics can take over! First your social feeds... and then, the world! (cue maniacal laughing)

IF ONE DIRECTION DOESN'T PERFORM ON THE VMA'S I AM GONNA JUMP OFF THIS LEDGE
— KATY PERRY (@katyperry) September 6, 2012

@NiallOfficial congratulations, you didn't let me down! xo
— KATY PERRY (@katyperry) March 13, 2012

WE ARE BELIEBERS! http://t.co/pivBJmII
— KATY PERRY (@katyperry) October 4, 2012

The new song Skyscraper by @ddlovato is pure perfection. Her voice is one of the BEST undiscovered beauties. Can't wait for the full record.
— KATY PERRY (@katyperry) July 13, 2011

I'll be your Mrs. Robinson... RT @NiallOfficial: @katyperry looks like its official ... me and you http://t.co/iYvge5Sb
— KATY PERRY (@katyperry) September 7, 2012