Gamya studied up to grade 6 at Musaeus College in Colombo before leaving to Singapore and then studying at the Marsiling College, after that she went to Australia and studied Psychology for her Bachelor's degree.
Wijayadasa was named Miss Sri Lanka 2009 on Wednesday July 22, 2009 beating 11 beauty queens at Mount Lavinia Hotel in Sri Lanka. Gamya also won mini-titles like Miss Veet Beautiful Legs, Miss Personality and Miss Veet Beautiful Skin at the Derana Veet Miss Sri Lanka 2009 beauty pageant.
2009 October Wijayadasa was appointed as the United Nations Good will ambassordor for Sri Lanka as a recognition of her 10 years of community service for her country. Gamya is also working as representative of " Tharunyata Hetak " - National Youth Organisation.
Wijayadasa focus on rehabilitation process, welfare of Internally Displaced People in the North of Sri Lanka and Youth education.
Wijayadasa began volunteering at the age of 13.[1][2] She started as a volunteer journalist and ventured into many avenues of social service where she contributed to major community projects before the title of Miss Sri Lanka was bestowed upon her.
Wijayadasa has raised over three-million US dollars and improved not only education but also areas such as sports, health and bonding within communities. Free educational seminars are held island wide, targeting rural areas, corporate training is given free island wide, a book drive where we donate books to libraries, efforts to uplift current forum of all sports island wide, infrastructure development (largest swimming pool in Northern Peninsula) and cultural development in rural areas.
