Shelly's father, J. Nabu Kumar, works a civil engineer in Dubai, United Arab Emirates. Her mother Sheela is a homemaker. She has an elder brother and a sister. Shelly's brother is married and lives in the US. Her sister, Shibily earns as a teacher.[1]
Shelly studied in Muscat and in New Indian Model School, Dubai. She has a diploma in mass media and communication from Singapore and another diploma in sociology. Shelly did her Post Graduation in E-Governance.
Shelly was selected as the second runner up for the Miss Flower Show contest held at Kanakakunnu, Trivandrum.[3] Shelly acted in the Malayalam movie Kanalkannadi directed by Jayan Poduval, although it was never released.[4] Kishore is famous in Malayali households for her portrayal of Shalini Rudran in Kumkumapoovu. After finishing that production, she took a break from television. In 2017 she came back through the portrayal of Balasuda in Sthreepadam.[citation needed]