Ridhima Tiwari is an Indian actress who was born on July 31, 1993 in Tamluk, West Bengal, India. She holds Indian nationality and belongs to a Bengali cultural background, where Bengali, Hindi, and English are commonly spoken. She spent her early years in West Bengal and completed her college education at Tamralipta Mahavidyalaya before relocating to Mumbai, Maharashtra, to pursue opportunities in the entertainment industry. Over time, she adopted the screen name Natasha Rajeshwari, under which she gained recognition in digital media. She is also active on Instagram under the username natasharajsewari, where she has over 670K+ followers, sharing glimpses of her acting projects, lifestyle, and collaborations.

Ridhima Tiwari began her professional journey as a model before transitioning into acting through web-based content. She gained early recognition with the web series School Girl in 2021, which marked a turning point in her digital career. Following this, she became a recurring face on OTT platforms such as Ullu, Prime Shots, and Cine Prime, appearing in multiple series across genres focused on romance and drama. Her notable performances include roles in Jalebi Bai, where she played a central character, and Madhosh Diaries Good Wife, where she portrayed Shobha. She further expanded her presence with projects like Rajni Kaand, Walkman, Vasu, Babu Ji Gher Pe Hain, and Nalayak in 2022, demonstrating consistency across multiple productions. In 2023, she appeared in Andar Ki Baat as Sadhna, Betaab Ishq as Nidhi, Mol Ki Bahu as Suman, and Kitab Ka Raaz, along with Online Romance and Sanskari, continuing her strong presence in digital storytelling. Her earlier and ongoing association with the Sundara Bhabhi series, including Sundara Bhabhi Returns, contributed to her recognition among OTT viewers. In 2024 and 2025, she continued working in projects such as Purani Haveli, Khel Khel Mein, Besharam, and Raju Ban Gaya Gentleman, where she played roles like Alia and Bholi. Alongside these, she has also been part of the long-running television series Ilakkiya, appearing across a large number of episodes, further strengthening her experience in serialized storytelling. Her career reflects a steady rise within the OTT space, supported by frequent appearances and a diverse range of characters.

In her personal life, Ridhima Tiwari maintains a relatively private approach while actively engaging with her audience through social media. She is known for presenting a confident and expressive personality, often sharing motivational captions that reflect positivity and self-growth. Her posts frequently include fashion shoots, behind-the-scenes glimpses, and lifestyle moments, offering insight into her daily routines and creative interests. She is also open to collaborations and professional inquiries, as indicated through her social platforms. While she remains unmarried, she has not publicly shared detailed information about her relationships or family life, choosing instead to focus on her professional journey and digital presence.