Perry joined Twitter as @katyperry in 2009, reached 50 million followers by 2012 and has been the reigning queen ever since. She's followed closely behind by Justin Bieber, who currently has 96.7 million followers, Barack Obama (90.8 million), Taylor Swift (85.1 million) and Rihanna (74.1 million).
Last July, Perry celebrated another milestone when she was the first to reach 90 million Twitter followers. #Katy90GIFParty started trending, where fans began congratulating the California native with their favorite animated images of the diva.
Upon hearing the latest news, her KatyCats showed out again, this time using the hashtag "#LoveKaty."
See some of our favorite celebratory tweets below: