follower
Definitions
A person who moves or travels behind someone or something.
An adherent or devotee of a particular person, group, or cause.
A person who subscribes to an account on a social media website to receive updates.
Examples
She gained a new follower on her social media account after posting the photography tutorial.
The charismatic leader was always surrounded by a loyal follower who documented his every word.
As a dedicated follower of the fashion industry, he keeps up with all the latest runway trends.