[8][5] She represented Myanmar at the Miss Supranational 2013 pageant which was held on 17 August to 6 September in Minsk, Belarus, along with beauties from 98 other nations.

She made her acting debut with the Burmese film Fairy and Me, where she played the leading role with an actor Kaung Pyae and directed by Kyi Phyu Shin in 2014.

[12] Khin was appointed as brand ambassador for Camella Cosmetic, Daw Win Garment and Line Myanmar in 2014.

Following the 2021 Myanmar coup d'état, Khin Wint Wah was active in the anti-coup movement both in person at rallies and through social media.

[15][16] On 2 April 2021, warrants for her arrest were issued under section 505 (a) of the Myanmar Penal Code by the State Administration Council for speaking out against the military coup.

Along with several other celebrities, she was charged with calling for participation in the Civil Disobedience Movement (CDM) and damaging the state's ability to govern, with supporting the Committee Representing Pyidaungsu Hluttaw, and with generally inciting the people to disturb the peace and stability of the nation.