Kajol made her acting debut with Bekhudi (1992) and had her first hit with her second film Baazigar (1993) along with Shah Rukh Khan.

During her career years, she has been part of many critically and commercially successful films, and is regarded as one of Bollywood's most successful actresses. Touted as one of the best actresses in Bollywood, Kajol, who is of Bengali-Marathi descent, in fact belongs to a family tree with a long respectable history in the Indian cinema. She and Shah Rukh Khan went on to deliver some of the biggest Bollywood hits like Dilwale Dulhaniya Le Jayenge (1995) and Kuch Kuch Hota Hai (1998). Her performances in both the films were praised and earned her two Filmfare Best Actress Awards.

Kajol's Dilwale Dulhania Le Jayenge, was not only the biggest hit of 1995, but one of the biggest hits of Hindi cinema ever. The film has entered its twelfth year in Mumbai theaters, grossing over 12 billion rupees overall, making it one of the biggest film blockbusters in Bollywood.

Year 1995 proved to be a very good year for Kajol. She went on to star alongside Shah Rukh Khan in two of the year's biggest hits. Her first release was Rakesh Roshan's Karan Arjun. The film, which dealt with reincarnation, became the second biggest hit of the year.

Kajol married actor Ajay Devgan on February 24, 1999. On April 20, 2003, she gave birth to a daughter named Nysa, which means Goddess of purity. After the successful Kabhi Khushi Kabhie Gham released in 2001, she took a sabbatical from full time acting for five years.

She made a successful comeback with Kunal Kohli's Fanaa (2006), for which she received her fourth Best Actress award at the Filmfare.

She recently made a comeback after a two year hiatus with hubby Ajay Devgan in U, Me Aur Hum, where she played a schizophrenic