1. Lady Gaga (@ladygaga), 5,696,616 followers
2. Britney Spears (@britneyspears) 5,681,229 followers
3. Ashton Kutcher (@aplusk) 5,562,698 followers
4. Ellen DeGeneres (@TheEllenShow) 5,067,206 followers
5. President Barack Obama (@BarackObama) 5,036,398 followers
The president of the United States is in fifth place, behind two pop singers, an actor and a talk show host.