Jan Ployshompoo Supasap is a Thai actress, singer, and model signed under GMMTV. She holds a bachelor's degree from the Department of Philosophy, Politics, and Economics at the College of Interdisciplinary Studies, Thammasat University. Early on in her career, she won a contest that allowed her to appear in a commercial with Girls' Generation's Taeyeon. She was subsequently given opportunities to appear in commercials, music videos, and eventually series. Since 2019, Ployshompoo is also a member and leader of the Thai girl pop group SIZZY (formerly known as SISSY) along with Jane Ramida Jiranorraphat, Aye Sarunchana Apisamaimongkol, and Ciize Apichaya Saejung.