Sonali was born in Mumbai into a Marathi speaking Chandraseniya Kayastha Prabhu family.She studied in Bangalore and Mumbai in Kendriya Vidyalaya Malleswaram and Holy Cross Convent High School, Thane. Thereafter she went to Welham Girls School, Dehradun. She married film director Goldie Behl on 12 November 2002. On 11 August 2005, she gave birth to a son, Ranveer, at the Breach Candy Hospital.