30th April 1947 was a special day for Mr & Mrs Fonseka (Gilbert and Seelwathie) as Seelwathie gave birth to a beautiful baby girl following the two elder boys.The fair chubby baby girl was named " WANNIARACHCHIGE MALANI SENEHELATHA FONSEKA". When Mr & Mrs Fonseka took the horoscope of the new born baby to an Astrologer, he predicted that the horoscope belonged to a person who's going to become a queen in the country one day.
After Malini was born, her family moved to Nugegoda - Jambugasmulla from Peliyagoda where Malini was born. In 1952 Malini started her education at St. Johns College Nugegoda. She was at St. Johns till the fifth grade.
Later the Fonseka family moved to Kelaniya Wedamulla and Malini was enrolled at Gurukula Maha Vidyalaya where she completed her education.