Hollingsworth was a student at Mentone Grammar and was a keen Australian rules football player, playing for the East Brighton Vampires and the Sandringham Dragons, and considered a future application to the AFL Women's draft process before deciding to focus on track and field athletics.

Hollingsworth is coached by four-time Olympian and former world 5000m bronze medallist Craig Mottram.

[5] In March 2021, Hollingsworth aged 15 ran the fastest ever time world wide for an U18 athlete in a 1000 metres race.

[9] In Adelaide in April 2024, she ran 1:58.40 to win the Australian Athletics Championships 800 metres race, and set a new national under-20 record.

[11][12] She won the silver medal in the 800 metres at the 2024 World Athletics U20 Championships in Lima, Peru in August 2024.