Tanwar was born in 1972 or 1973 to Rajendra Singh Tanwar, a retired CBI officer, in a middle-class Rajput family from Alwar, Rajasthan, India. She was educated in many Kendriya Vidyalayas before graduating from Lady Shri Ram College in New Delhi.
Tanwar was born around 1972 or 1973 to Rajendra Singh Tanwar, a former CBI officer, in a modest Rajput family in Alwar, Rajasthan. She attended multiple Kendriya Vidyalayas before completing her education at Lady Shri Ram College in New Delhi.