(FILES) In this file photo taken on October 18, 2018 singer Britney Spears attends the announcement of her new residency, 'Britney: Domination' at Park MGM in Las Vegas, Nevada. - Under a controversial legal guardianship since 2008, US pop singer Britney Spears is scheduled to address a Los Angeles court on June 23, 2021 in the battle over her father's control of her affairs. (Photo by Ethan Miller / GETTY IMAGES NORTH AMERICA / AFP) 23/06/2021 - 08:06