Green’s Dictionary of Slang

(orig. US) anyone who courts the famous with the hope of enjoying some proxy fame.

1968		T. Wolfe Electric Kool-Aid Acid Test (1969) 224: ‘Well, that’s what you get for being celebrity fuckers,’ says Krassner.
1977		Maledicta 1 (Summer) 18: She’s just a groupie, a screamer- &-creamer, a celebrity-fucker, and a plaster-caster.
1997		N. Mailer in Plimpton Truman Capote n.p.: She was always such a celebrity fucker. It must be said of Lillian [Hellman] that when the chips were down she’d always go for the guy who had the most clout.
2005		posting at Mack Avenue Skullgame 10 Oct. 🌐 You’re the worst kind of celebrity fucker, pimp, and excuse for a hanger on that we’ve ever seen.