Tamboli was born on 21 August 1996 in Aurangabad, Maharashtra, India.She was born on August 21, 1996. And did her schooling from her home town.

She belongs to a Christian family, her family include her father, mother, dog and a black cat. She is very close to her father and family. 

She started her career as a model and was also seen in various television commercials. Apart from this she clicks and posts her photos, where she is often seen experimenting with different looks.

Tamboli started her career as a model and later made her acting debut in the Indian film industry with the Telugu horror comedy film Chikati Gadilo Chithakotudu playing the role Pooja

 She later signed Raghava Lawrence‘s Tamil action horror film Kanchana 3 playing Divya.

However Post her debut, Nikki was seen in films such as Kanchana 3, Chikati Gadilo Chithakotudu, and Thippara Meesam.

Her third film was Thipparaa Meesam (Telugu) where she played Mounika. The actress is very active sports and fitness enthusiast

In 2020, she entered the Hindi reality show Bigg Boss in its fourteenth season as a contestant. Nikki loves animals and also has a dog and a cat as her pets.