From Beyonce and her BeyHive to Justin Bieber and his Beliebers, here's a list of the celebrities with the most devoted fan bases. 1 of 20. Beyoncé ... 2 of 20. Taylor Swift. ... 3 of 20. Cardi B. ... 4 of 20. BTS. ... 5 of 20. Rihanna. ... 6 of 20. Justin Bieber. ... 7 of 20. Katy Perry. ... 8 of 20. Bruno Mars. More items... Feb 11, 2023