'Judy' cast revealed

"Judy" is already generating major Oscar buzz. The biopic follows legendary actress Judy Garland as she arrives in London for a string of sold-out concerts at the Talk of the Town nightclub in 1969. In celebration of the film's release on Sept. 27, 2019, Wonderwall.com is taking a look at the cast. Keep reading to see who's playing whom in "Judy."

RELATED: Must-see biopics

Renee Zellweger stars as Judy Garland, one of Hollywood's most iconic and tragic actress-singers, in "Judy." The "Wizard of Oz" starlet is pictured here in a studio portrait in 1965.

RELATED: The best music biopics

After spending a few years away from the spotlight, Renee Zellweger is back and better than ever. The 50-year-old actress's big break came in 1996 when she was cast in "Jerry Maguire." She's since starred in several successful films including "Nurse Betty," "Cinderella Man" and "Miss Potter." She earned two consecutive best actress Oscar nominations for her work in "Bridget Jones's Diary" and "Chicago" and won an Academy Award for her performance in 2003's "Cold Mountain." She more recently starred in the 2019 Netflix anthology series "What/If." Renee has shared romances with some of Hollywood and music's biggest names including Jim Carrey, Bradley Cooper, Jack White and Kenny Chesney. In 2012, she started seeing guitarist Doyle Bramhall II. Reports that they'd split surfaced in early 2019.

RELATED: '90s stars who've barely aged

Finn Wittrock stars as Mickey Deans, Judy Garland's fifth and last husband, in "Judy." The real-life couple are pictured here after their wedding at Chelsea Register Office in London in March 1969.

Finn Wittrock is becoming one of Hollywood's go-to actors. The 34-year-old star got his start on "All My Children" before landing standout roles in "The Normal Heart," "Noah," "American Horror Story," "The Big Short" and "La La Land." He most recently starred in 2018's "The Assassination of Gianni Versace: American Crime Story" and "If Beale Street Could Talk." Next up, Finn will appear in the 2020 Netflix series "Ratched." He married longtime girlfriend and fellow Juilliard graduate Sarah Roberts in 2014.

Gemma-Leah Devereux plays Liza Minnelli, an accomplished actress who is also Judy Garland's daughter, in "Judy." Liza is pictured here in a photo taken for Vogue Magazine in 1968.

Gemma-Leah Devereux is best known for her role as Lady FitzGerald in the fourth and final season of "The Tudors." The 29-year-old Irish actress has also appeared in "Stitches," "Comedown" and "Cardboard Gangsters." Fans will soon be able to catch Gemma-Leah in 2019's "Bump" and the 2020 miniseries "Dead Still."

Rufus Sewell stars as Sidney Luft, an entertainment executive who was Judy Garland's third husband, in "Judy." The real-life duo are pictured here at a reception in London in October 1957.

Rufus Sewell has appeared in several successful movies and TV shows over the years including "Hamlet," "The Woodlanders," "A Knight's Tale," "The Illusionist," "Tristan and Isolde," "Zen" and "Eleventh Hour." He first came to fame in 1993's "Dirty Weekend." The 51-year-old Brit currently stars on Amazon's "The Man in the High Castle" and PBS's "Victoria." Rufus shares a son with his ex-wife, scriptwriter and producer Amy Gardner, and a daughter with his longtime girlfriend, Ami Komai.

Michael Gambon plays Lord Bernard Delfont, one of the leading British theatrical impresarios, in "Judy." Lord Delfont is pictured here at his EMI office in October 1980.

Michael Gambon is one of Britain's most accomplished actors. The 78-year-old star has built an impressive resume in film, television and on the stage. He won a Tony Award for his performance in "Skylight" on Broadway, starred as Professor Albus Dumbledore in the final six "Harry Potter" movies and also appeared in "The King's Speech," "Quartet," "Cranford," "Emma," "Churchill's Secret" and "Little Women." The four-time BAFTA winner most recently starred in 2018's "Paddington 2." Michael has been with partner Philippa Hart since 2000 — although he is still legally married to his wife of 57 years, Anne Miller. He has three children — one with his wife and two with Philippa.

Bella Ramsey plays Lorna Luft, Judy Garland and Sidney Luft's actress daughter, in "Judy." Lorna is seen here at a Judy Garland performance party at the El Morocco Club in New York City on July 31, 1967.

Bella Ramsey got her big break as Lyanna Mormont on HBO's "Game of Thrones" in 2016. The 15-year-old child star stole scenes on the acclaimed series for three years, her performance culminating in a heroic end on the series finale in 2019. She has also appeared on the 2017 TV adaptation of "The Worst Witch" and the 2018 Netflix original series "Hilda." Up next, Bella will appear in the Marcel Marceau biopic "Resistance."

John Dagleish plays Lonnie Donegan, a British skiffle singer known as the "King of Skiffle," in "Judy." Lonnie is pictured here in December 1962.

Talk about a doppelgänger! John Dagleish looks just like his on-screen "Judy" persona, Lonnie Donegan. The 38-year-old British actor is well known for his work in theater thanks to starring turns in productions of "Sunny Afternoon," "Harlequinade," "The Winter's Tale," "A Midsummer Night's Dream" and "Common." John has recently shifted over to film, earning roles in 2017's "Justice League" and 2018's "Christopher Robin." He also played Alf Arless on the BBC's "Lark Rise to Candleford" from 2008 to 2011. Up next, John will star in the 2020 miniseries "The Third Day."