The most successful duo in Australian radio history is officially over. Jackie 'O' Henderson has resigned from The Kyle & Jackie O Show, walking away from her 25-year broadcast partnership with Kyle Sandilands. The sudden departure follows a heated on-air confrontation between the pair on February 20, 2026. ARN Media confirmed the news via a statement to the Australian Securities Exchange (ASX), announcing that KIIS FM has taken the top-rated breakfast program off the air immediately.

The split comes just over a year into a record-breaking 10-year contract valued at $200 million. While Henderson has officially quit the network, Sandilands faces significant disciplinary action from ARN Media. The company confirmed it has issued the shock jock a 14-day serious misconduct notice following the fallout. ARN Media stated the show will remain on hiatus to allow Sandilands to remedy a serious misconduct breach issued by ARN Media.

Industry analysts at Mumbrella and Radio Today note that this marks the end of a dominant era that began at 2Day FM before moving to KIIS FM in 2014. Henderson has not yet released a personal statement, but reporters at The Nightly confirm she has left the program permanently. The future of the KIIS FM breakfast slot remains uncertain as ARN Media navigates the loss of Australia’s highest-paid radio stars.