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1. Pop star Katy Perry has just crossed the 90 million Twitter follower threshold, boasting the most number of followers on the social media site.
In honor of the occasion, click through to find which other public figures are nipping at her Twitter heels.

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2. Justin Bieber comes in a distant second with 83.9 million followers. Not too shabby.

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3. Singer-songwriter Taylor Swift has a following that tops 79 million. Squad goals!

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4. President Barack Obama has an impressive 75.8 million followers. Watch out, Tay!

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5. Rihanna commands an audience of more than 62 million on Twitter.

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6. Lady Gaga has nearly 61 million followers. Her Little Monsters definitely aren't that little.

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7. Through her @TheEllenShow handle, Ellen DeGeneres has a following of 60.6 million.

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8. More than 55 million follow Justin Timberlake's every Twitter move.

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9. One of Twitter's first big stars, Kim Kardashian West now has 46.3 million followers. The next most followed Kardashian? Khloe Kardashian, with 20.9 million followers.

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10. Britney Spears is mere thousands shy of Kardashian's following with 46.2 million fans under her Twitter spell.

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11. Portuguese soccer star Cristiano Ronaldo is the top sports figure on the list with 43.8 million followers.

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12. Pop star and actress Selena Gomez is close behind Ronaldo with 43.7 million Twitter fans.

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13. "Tonight Show" host Jimmy Fallon has 41.6 million followers.

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14. Pop star Ariana Grande boasts 39.8 million Twitter fans.

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15. Singer Shakira has a Twitter following of 38.6 million. You've find them checking out her timeline whenever, wherever.

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16. Pop star and "X Factor" host Demi Lovato has 36.8 million Twitter fans. They're still loyal even though she temporarily quit Twitter in June!

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17. Jennifer Lopez boasts 36.1 million followers.

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18. Rapper Drake has a following of more than 33 million on the social media site.

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19. Oprah Winfrey has nearly 33 million Twitter followers. You get a tweet and you get a tweet and you get a tweet!

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20. LeBron James a.k.a. King James rounds out the top 20 with more than 31 million followers. He's the NBA MVP and most followed player.