Lady Gaga has become the first person ever to reach 18 million followers.
The singer beat Justin Bieber to the milestone, who has 16.4 million fans on the social site.
Celebrating the news, Gaga tweeted: "Can't believe I have 18,000,000 TwitterMonsters, really rad, was just a few years ago I had barely any."
Katy Perry is currently third most-followed person with 13.9m followers, while Shakira is at four with 12.6m and Kim Kardashian is at five with 12.5m.
Lady Gaga has confirmed that she will release a new album later in 2012.
The singer, whose second album 'Born This Way' came out in May last year, said she is planning a full tour as well.
The most-followed people on Twitter:
1. Lady GaGa - 18m
2. Justin Bieber - 16.4m
3. Katy Perry - 13.9m
4. Shakira - 12.6m
5. Kim Kardashian - 12.5m
6. Britney Spears - 12.4m
7. Rihanna - 11.9m
8. Barack Obama - 11.9m
9. Taylor Swift - 10.4m
10. Selena Gomez - 9.6m