Bella Ramsey
as Lorna Luft
Gemma-Leah Devereux
as Liza Minnelli
Philippe Spall
as L.A. Cab Driver
Diana Pocol
as Young Ava Gardner
John Dagleish
as Lonnie Donegan
Richard Cordery
as Louis B. Mayer
Daniel Cerqueira
as Stan
Lewin Lloyd
as Joey Luft
Tom Durant-Pritchard
as Ken Frisch
Adrian Lukis
as Dr. Hargreaves
Gus Barry
as Mickey Rooney
Jodie McNee
as Vivian
Gus Brown
as Porter Reg