Sonal did her schooling in Delhi Public School in Greater Noida and then Philosophy honors at Gargi College in New Delhi. She first appeared on screen in Himesh Reshammiya's album Aap Kaa Surroor. In the movie Jannat, she was paired opposite Emraan Hashmi which was directed by Kunal Deshmukh. She has also signed a three film deal with the Bhatts, of which two are pending. She also sang a duet with KK for one of the film's song "Kaise Bataoon".Then she acted in a Telugu film Legend marking her comeback to Tollywood after many years. In early 2015, she signed two Telugu films Size Zero opposite Arya and Sher opposite Nandamuri Kalyan Ram. She was crowned as the Miss World Tourism 2005 at Miri, Sarawak state of Malaysia. She is the first Indian to have claimed Miss World Tourism title. She has walked the ramp for many fashion shows and has modeled in print campaigns for brands like LG, Reliance CDMA, Hero Honda Passion, Nokia, Hindustan Times, Delhi Times, and many more.