Sonia Fergina Citra representing Bangka Belitung is 25 years old and stands tall at 175 cm. She is the youngest of her 6 siblings and loves Muay Thai sport, Taekwondo and Capoeira. She is active in various social causes associated with the organization “Diberi Untuk Memberi.” Sonia helps in providing free food to janitors, school renovation and education assistance, and she is also involved in environmental conservation activities related coral reef adoption at Tanjung Kelayang beach, Belitung. Puteri Indonesia 2018 is a way for her to contribute more in introducing and promoting her resource-rich hometown.