Kajal Aggarwal's debut movie was Kyun! Ho Gaya Na (2004). Kajal played the role of Diya's (Aishwarya rai) friend and film was a flop on box office.
Her first movie as lead actress was Singham (2011) which was a blockbuster hit and Kajal played the role of wife of Bajirao Singham (Ajay Devgan).