Duneesha Piumi Prarthana was born on September 25, 1995, in Hanwella, Sri Lanka. She belongs to the Sinhala community and speaks Sinhala and English. She studied at Hanwella Rajasinghe Central College and later studied Human Resource Management at LPEC – Lanka Professional Education Center and Information Technology at ESOFT Metro College, Avissawella. She is also a registered apprentice pharmacist at the Sri Lanka Medical Council. Duneesha is active on Instagram under the username duneeshapiumi, where she has over 55K+ followers. On TikTok, she is active as duneeshahettiarachchige with over 315K+ followers and more than 4.2M+ likes. She also runs a YouTube channel with over 95K+ subscribers.
Duneesha started her career as a model and participated in several beauty pageants. She won Miss Regency Queen 2019 and Miss Diamond Queen 2018 while also becoming the 2nd Runner-Up at ITN Aurudu Kumariya 2018. Earlier, she was among the Top 12 contestants in ITN Aurudu Kumariya 2017 and Top 15 in 2016. She later entered the entertainment industry through Sinhala music videos and teledramas. Duneesha appeared in the Sinhala music video Sihine Seya and acted in television productions including Ahas Maliga, Nadagamkarayo, and Nikini Kusum. In cinema, she appeared in the Sinhala movie Sihina Jeewitha released in 2023. Alongside acting and modeling, she continues her work as a digital creator and influencer.
In her personal life, Duneesha currently lives in Hanwella and often shares moments related to fashion, beauty, travel, and daily lifestyle activities on social media. Her content reflects her interest in entertainment, pageantry, and creative media work. Publicly available information about her relationship status remains limited.