13 things about Miss Universe Australia 2025 finalist Sheridan Mortlock

Sheridan Mortlock represented Australia in the 22nd edition of Miss Earth. She is the third Australian to be crowned Miss Earth-Air.

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BIOGRAPHY

Mortlock is an Australian model and beauty queen from Paddington, New South Wales, Australia. Her father works for the biggest agriculture business in the world and her mother is a carpenter who grew up in Jerilderie, New South Wales, Australia.

Before joining Miss Universe Australia, Mortlock competed in Miss Earth Australia three times. Here are 13 more things about her:

1. In 2009, she and her family traveled around Australia in a camper trailer.
2. In 2010, she and her family settled in Jerilderie. In the same year, she started aspiring to join the Australian parliament to help create a better Australia, especially in terms of sustainability and environmental changes.
3. From 2013 to 2018, she attended Finley High School in Finley, New South Wales
4. In 2017, she visited Japan.
5. In 2019, she entered the University of Wollongong in Wollongong, New South Wales.
6. She is Miss Air Australia 2019.
7. She was Miss Earth Australia 2020 first runner-up.
8. She won Miss Earth Australia 2022.
9. She is Miss Earth-Air 2022.
10. In 2023, she visited Cyprus and India.
11. She was a Miss Divine Beauty 2023 judge.
12. She was a Miss Universe Australia 2025 finalist.
13. On May 19, 2025, she turned 25.

TIMELINE

Mortlock is 5’7¹⁄₂“tall. She has two younger brothers.

2010s

• In February 2013, she entered Finley High School.
• In October 2017, she traveled to Obama, Fukui, Japan.
• In January 2018, she visited the Altina Wildlife Park in Darlington Point, New South Wales.
• In August 2018, she joined IGA in Jerilderie as a cashier.
• In October 2018, she joined PFM Agency in Sydney, New South Wales as a fit model.
• In November 2018, she graduated from Finley High School and she joined Colony Inn in Jerilderie as a part-time bar waitress.
• In January 2019, she entered the University of Wollongong to pursue double bachelor’s degrees in global sustainability and politics.
• In February 2018, she left IGA and Colony Inn.
• On September 8, 2019, she competed against 16 other candidates at Miss Earth Australia 2019 at the grand ballroom in Four Seasons Hotel Sydney in Sydney. She was one of the runners-up and was crowned Miss Air Australia 2019. The other runners-up were Miss Water Australia 2019 Karyn Xie, Miss Fire Australia 2019 Pauline Chapman and Miss Charity Australia 2019 Brittany Dickson.

2020s

• Amid the new coronavirus (COVID-19) pandemic, she, Xie and Dickson were handpicked to compete for the Miss Earth Australia 2020 title. On August 21, 2020, she was named runner-up to Dickson while Xie was second runner-up.
• From January 2021 to June 2021, she was a part-time barista at Greenpatch Cafe in Wollongong.
• In October 2021, she joined Connor Clothing in Sydney as a part-time retail salesperson.
• In November 2021, she joined Dyson in Sydney as a part-time retail sales worker and Kreate Australia as a brand ambassador.
• In March 2022, she left Dyson.
• In May 2022, she joined Ginger & Smart in Sydney as a part-time fashion stylist.
• In June 2022, she left Connor Clothing.
• In September 2022, she joined Edge Model Management in Sydney as a model.
• On September 4, 2022, she competed against 17 other candidates at Miss Earth Australia 2022 at Hyatt Regency Sydney in Sydney and won the title.
• On November 29, 2022, she represented Australia at Miss Earth 2022 and competed against 85 other candidates at Okada Manila in Parañaque, Metro Manila, Philippines. She was runner-up to Mina Sue Choi of South Korea and was crowned Miss Earth-Air 2022.
• On January 1, 2023, she welcomed the new year in Sydney.
• On August 2, 2023, she traveled to Cyprus.
• In May 2022, she left Ginger & Smart.
• In May 2023, she joined Australian Taxation Office in Wollongong as a civil servant.
• On August 26, 2023, she and Choi served as judges at Miss Divine Beauty 2023 at the Jawaharlal Nehru Stadium in New Delhi, India.
• On September 9, 2023, she crowned her successor Miss Earth Australia 2023 Helen Latufeku at the Tang Media Performing Arts Centre in Smithfield, New South Wales.
• From June 2024 to October 2024, she was a sustainability intern at Taronga Conservation Society Australia in Sydney.
• In July 2024, she joined Living Connected in Wollongong as a technology support specialist for seniors.
• In September 2024, her contract as a Kreate Australia ambassador ended.
• In January 2025, she became a Living Connected manager.
• In May 2025, she and her fellow Miss Universe Australia 2025 finalists traveled to Quang Nam, Vietnam.
• On August 15, 2025, she competed against 29 other Miss Universe Australia 2025 finalists at Crown Perth in Burswood, Western Australia, Australia. She was unplaced.