Sithara debuted in the Malayalam film Pottas Bomb (2013) directed by Suresh Achoos. The same year she got the chance to work with Sathyan Anthikad in Oru Indian Pranayakadha. The actress also did another supporting role in Malayalam film Anarkali (2015).
After Anarkali she got chance to act as heroine in Happy Wedding which is directed by Omar Lulu (director). After that she did some notable character roles in Navel the Jewel an international movie and Campus Diary.