fan-girl

noun

Sometimes fan·gurl. an obsessive female fan, especially of comic books, science fiction, video games, music, or electronic devices: a web forum for Star Wars fangirls.

verb (used without object)

(of a female fan) to demonstrate intense excitement at the mention or in the presence of a particular celebrity, film, product, etc., especially one associated with popular culture or technology: This is the fourth time the actress has fangirled out on live TV.