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Kajol Devgan, née Mukherji (born August 5, 1975), popularly known as Kajol, is famous a Bollywood actress.

She comes from a family historically connected with Indian cinema. Her mother Tanuja was an acclaimed actress; her cousins Rani Mukerji, Sharbani Mukherjee and Mohnish Behl are also part of the industry. Her aunt Nutan, grandmother Shobhana Samarth and great grandmother Rattan Bai have all been influential figures in the Bollwood film industry. Her younger sister Tanisha recently started a film career. Kajol is married to actor Ajay Devgan.

She has appeared in a great many movies. Not all of them have been hits; However, she has appeared in some of Bollywood's biggest hits, most notably the films in which she co-stars with Shah Rukh Khan: (Baazigar, Karan Arjun, Dilwale Dulhaniya Le Jayenge, Kuch Kuch Hota Hai, and Kabhi Khushi Kabhie Gham).

She retired briefly from film-making after the birth of her daughter Nysa. However, she has recently signed a film with director Kunal Kohli. The film is to be called Fanaah (Destruction) and she will co-star with Aamir Khan.

She has also appeared on the famous TV show Kaun Banega Crorepati (the Indian version of Who wants to be a millionaire?) hosted by Amitabh Bachchan. She was paired with her husband Ajay Devgan. They won ten million rupees and donated them to a cancer hospital in Chennai.