OASIS star Liam Gallagher is forking out £1,000 an hour for a fearsome US celebrity lawyer in his love child court case.

Judith Poller — dubbed “Hollywood’s top troubleshooter” — will represent the rocker after his former lover demanded more cash.

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Poller, who has represented film stars Scarlett Johansson and Drew Barrymore, has previously boasted: “My clients are high-end because my billing rate is high.”

And a source said: “She’s got the reputation of a Rottweiler-type lawyer.”

Poller will represent Gallagher, 52, in this month’s hearings in New York after Liza Ghorbani applied for more child support for their daughter Gemma, 12.

The singer, who has not met Gemma, reached an agreement on maintenance payments a decade ago but The Sun on Sunday revealed last month that Ghorbani, 50, is now seeking an increase.

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Sources claimed it was felt that she was trying to cash in on the upcoming Oasis reunion tour, from which Liam is rumoured to earn £50million.

Poller has said of her work: “Privacy is a huge concern to celebrity clients.

“People are so interested in their lives, and the fact that they are going through it only makes them more interesting.

“I do everything from pre-nuptial agreements to paternity suits, divorce.”

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Business magazine Forbes included her in its inaugural Top 200 lawyers list last year.

Poller was Marvel star Johansson’s attorney when she filed for divorce from her husband Romain Dauriac in 2017.

And she acted for Barrymore in her divorce from Will Kopelman in 2016.

Journalist Ms Ghorbani’s plea will be heard by Judge Jeffrey Pearlman in the New York Supreme Court on April 16.

A second, fuller, hearing has been scheduled for April 28 if the judge rules there is a valid case to be heard.

Liam previously appointed celeb lawyer Raoul Feldman, who has represented Mike Tyson, Frank Sinatra and Sir Mick Jagger.

New legal documents show he is now represented by Poller.

The Sun on Sunday approached her office for comment.