The success of Katy Perry's most recent single, "Roar," from her new album Prism, has catapulted her to the number one spot on Twitter on Sunday, with well over 46.4 million followers. She's even made it past Justin Bieber's number of followers, putting him in second place.

Perry's Twitter followers also surged past Lady Gaga, who was number one earlier this year. Gaga has fallen to third place on Twitter.