[citation needed] Since 2021, she has been assigned as the manager and runway coach for Miss Universe Thailand pageant.

[2] According to her interview published in the Miss Earth website, Kulsoontornrut grew up in near poverty with her big family.

Effectively on October 13, 2014, she was dethroned by the Carousel Production due to violating her contract as a Miss Earth-Water 2013 titleholder.

Kulsoontornrut represented Thailand at Miss International 2014, which was held on November 11, 2014 at the Grand Prince Hotel Takanawa, Tokyo, Japan where she placed as the 2nd Runner-up.

Although being considered as a heavy favorite by many pageant portal, she finished as the 2nd Runner-up during the final competition on October 10, 2020.