Liza Minnelli has stated that she does not "approve nor sanction" the upcoming biopic about her mother, Judy Garland, which stars Renée Zellweger in the leading role.

The 72-year-old Cabaret Oscar winner said it is "100% fiction" that she has spoken to Zellweger about the film.

In a post on Facebook in which she linked to an online report saying she had "bonded" with the actress over her portrayal of Garland, Minnelli wrote: "I have never met nor spoken to Renée Zellweger …

"I don’t know how these stories get started, but I do not approve nor sanction the upcoming film about Judy Garland in any way."

She added: "Any reports to the contrary are 100% fiction."

The biopic, titled Judy, will focus on Garland at the latter stages of her tragically short life. 

The film will open in the winter of 1968, when Garland came to London to perform a series of sell-out concerts at the then prestigious Talk of the Town venue, which is now the Hippodrome Casino.

The Hollywood icon died of an drug overdose in June 1969 at the age of 47.

As well as Zellweger in the titular role, Irish actress Jessie Buckley will also star as production assistant Rosalyn Wilder.

Britain's Rupert Goold is directing Judy from a script by Tom Edge, whose CV includes Netflix's royal drama The Crown and the BBC's adaptations of JK Rowling's pseudonymously-written Cormoran Strike novels.

Minnelli was born in 1946, the daughter of Garland and her second husband, the director Vincente Minnelli.

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