Question: which celebrity has the biggest fan base?
Answer: 1 of 20. Beyoncé Larry Busacca/Getty Images for Coachella. ... 
2 of 20. Taylor Swift. Efren Landaos/SOPA Images/LightRocket via Getty Images. ... 
3 of 20. Cardi B. Arik McArthur/WireImage. ... 
4 of 20. BTS. Kevin Mazur/Getty Images for SiriusXM. ... 
5 of 20. Rihanna. ... 
6 of 20. Justin Bieber. ... 
7 of 20. Katy Perry. ... 
8 of 20. Bruno Mars.