Mighty mom Kajol turns 40 today. Though the actress has cut down on her film assignments post her marriage, she continues to delight viewers whenever her memorable films like DDLJ and Baazigar are telecast on the small screen. On the eve of her birthday we take a look at 10 unknown interesting facts about the actress. Kajol was born into a film family. From her great grandmother Rattan Bai to Nutan, mother Tanuja to dad Shomu Mukherjee, all were citizens of Bollywood. Kajol's mother Tanuja calls her Kads and used to term her a very mischievous kid. Kajol and her sister Tanisha remained unaffected by their parents divorce as they never argued or fought in front of their kids. Kajol shot for her first movie Bekhudi when she was 16. Kajol shares the record of winning the maximum Filmfare best actress awards(five in number) along with her late aunt Nutan. She considers her role in Gupt as the toughest role till date as she had to play a mean character. She also became the first woman to win a Filmfare for a negative role. She started dating Ajay during the filming of Gundaraj. While many criticized the couple for their unlikely pairing, Ajay said they never proposed each other. "We grew with each other. Marriage was never discussed, but it was always imminent" Kajol did Karan Arjun just to know how it feels to be a mere ornament in the film." I had nothing to do in the film except look good," Kajol had then stated. Kajol did a Tamil movie Minsaara Kannavu opposite Arvind Swamy and Prabhudeva. She found it difficult to dance along with Prabhudeva. The dusky actress’ favourite colour is white.