Britney Spears' controversial 13-year conservatorship is heading back to court for a pivotal hearing on Wednesday, in which a judge will consider requests to have her father ousted as the authority over her estate and to terminate the complex legal arrangement altogether.

The highly-anticipated hearing will take place at 1.30pm PDT (9.30pm Irish time) in Los Angeles Superior Court. It is likely the music star will appear virtually as she has previously.

Judge Brenda Penny will consider whether to terminate Jamie Spears' role as conservator of the singer's multimillion dollar estate.

Mr Spears has overseen his daughter's finances since the conservatorship, a complex legal arrangement usually reserved for the old or infirm, was put in place in 2008 after she suffered a series of mental breakdowns amid intense public scrutiny.

He also controlled her personal affairs until 2019, when he stepped down from the role citing health issues. The singer's caregiver, Jodi Montgomery, was named as his replacement.

At Wednesday's hearing, both sides will weigh in on whether the conservatorship should be dissolved, and if not, who will manage Ms Spears' life and career.

It is not expected that the conservatorship will end on Wednesday, despite Mr Spears petitioning for it earlier this month. He said "recent events" called into question whether his daughter still needed a court to oversee her affairs.

Her lawyers said Ms Spears "emphatically consents" to the conservatorship being brought to an end before the end of the year, but she has repeatedly said she does not want to be psychologically evaluated as a condition of the arrangement being wound up.

Ms Spears lawyer Mathew Rosengart has made it clear his primary goal is removing the singer's father as conservator of her estate, who she previously accused of conservator abuse. If that is approved, there will also be the appointment of a temporary conservator to replace him.

The hearing comes just days after a New York Times documentary, Controlling Britney Spears, alleged that Mr Spears hired a security firm to monitor the singer's phone calls and text messages and secretly recorded conversations in her bedroom.

Mr Rosengart said he would investigate the new allegations, saying they represented "a shameful and shocking violation of her privacy and civil liberties", adding that "placing a listening device in Britney's bedroom would be particularly disgraceful."

Controlling Britney Spears follows a documentary by the same filmmakers, called Framing Britney Spears, which debuted in February and helped spark new interest in the case.

Ms Spears first spoke out publicly against the conservatorship in bombshell testimony in June, saying it was "abusive" and "doing me way more harm than good". She alleged it was preventing her from having more children or getting married.

She announced she was engaged to partner Sam Asghari earlier this month.