a fan of (someone or something)

Someone who strongly likes, appreciates, supports, or is interested in someone or something. You might find this hard to believe, but Cheryl's a big fan of heavy metal. I'm a big fan of Jen's new boyfriend—especially after the parade of losers she's brought home over the years! Sorry, but I'm not really a fan of Art Deco.

*fan of someone

to be a follower of someone; to idolize someone. (*Typically: be ~; become ~.) My mother is still a fan of the Beatles. I'm a great fan of the mayor of the town.