Renée Zellweger as Judy Garland

Jessie Buckley as Rosalyn Wilder

Finn Wittrock as Mickey Deans

Rufus Sewell as Sid Luft

Michael Gambon as Bernard Delfont

Richard Cordery as Louis B. Mayer

Royce Pierreson as Burt Rhodes

Darci Shaw as Young Judy

Andy Nyman as Dan

Daniel Cerqueira as Stan

Bella Ramsey as Lorna Luft

Lewin Lloyd as Joey Luft

Tom Durant-Pritchard as Ken Frisch

John Dagleish as Lonnie Donegan

Adrian Lukis as Dr Hargreaves

Gemma-Leah Devereux as Liza Minnelli

Gus Barry as Mickey Rooney

Jodie McNee as Vivian

Gus Brown as Porter Reg

Matt Nalton as Music Director

Bentley Kalu as Georgie

Martin Savage as Mr. Horowitz

Phil Dunster as Ben

Gaia Weiss as Abbie

Lucy Russell as Publicist

John Mackay as Johnnie Ray

Natasha Powell as Ethel Gumm

Bradley Banton as James

Ed Stoppard as Interviewer

David Shields as Photographer

Tim Ahern as Walter Rickerts

Peter Forbes as Richardson

Arthur McBain as Askith

David Rubin as Noel

Anthony Shuster as Male Audience Member 1

Alistair Cope as Male Audience Member 2

Jack Jagodka as Tanned Man

Fenella Woolgar as Margaret Hamilton

Brontë Lavine as Fine Feather Dancer

Emily Warner as Fine Feather Dancer

Flora Dawson as Fine Feather Dancer

Gillian Parkhouse as Fine Feather Dancer

Jennifer Davison as Fine Feather Dancer

Jenny Wickham as Fine Feather Dancer

Joelle Dyson as Fine Feather Girl

Lucy Carter as Fine Feather Dancer

Rebecca Fennelly as Fine Feather Dancer

Sam Wingfield as Fine Feather Dancer

Robert Ryan as Paparazzi Photographer

Jonathan Cheetham as Drag Bar Customer