Miss Universe Thailand 2017 and 2020 On 15 July 2017, she competed against 39 other candidates at Miss Universe Thailand 2017. She finished Top 10. On 10 October 2020, she finished Top 20 against 28 other candidates at Miss Universe Thailand 2020.
Miss Earth Thailand and Miss Earth 2021 Petsom was crowned Miss Earth Thailand 2021 at the age of 28. She represented Thailand on 21 November 2021, at the International pageant of Miss Earth 2021, which was held virtually due to the ongoing
COVID-19 pandemic. •
Special awards: • Sportswear competition • Beachwear competition • Best Eco Video (Asia & Oceania) Petsom ranked fourth at the end of the event and was declared Miss Earth - Fire by the host
James Deakin, which was unofficially equivalent to 3rd runner-up. On 24 April 2022, she was officially crowned by
Lindsey Coffey Miss Earth 2020 within the presence of her predecessor Miss Earth - Fire 2020 Michala Rubinstein together with Miss Earth - Air 2021
Marisa Butler and Miss Earth Thailand national director Sirikan Onsonkran at InterContinental Hotel in Bangkok and received the official title sash.
Handover of reign On 29 August 2022, Petsom crowned her successor Spy Chawanphat Kongnim from
Lopburi as Miss Earth Thailand 2022 at
Grand Hyatt Erawan in Bangkok. On 29 November 2022, Petsom crowned
Andrea Aguilera Arroyave of
Colombia as Miss Earth - Fire 2022 at the
22nd Miss Earth pageant held at
Okada Manila in the Philippines. ==Notes==