Her 1985 gown was first worn by Freaky Friday star Jamie Lee Curtis in 1986 at the first American Cinematheque Award Salute.
Palmer, who is promoting her new film One of Them Days, presented an award with Colman Domingo, who was also a SAG Award nominee for his performance in Sing Sing.
Fonda used her time on the mic to deliver a powerful message of hope and unity to the A-listers in the room, telling them: “We must not isolate, we must stay in the community, we must help the vulnerable”.
Keke Palmer stunned fans at the Screen Actors Guild Awards on Sunday (23 February), as she gave a nod to Hollywood history.
The 31-year-old wore a black velvet dress by Chanel, complete with long black velvet opera gloves.