From IndiaTimes.com -

"It was in the genes, and it was predestined. The daughter of actors Shomu Mukherjee and Tanuja, the niece of unsullied beauty, Nutan, and the grand-daughter of Shobhna Samarth, Kajol took charge of her territory in the first few years of stardom; it was almost like she had swallowed the secret gems of success right in the womb. ‘Bazigaar’ in 1993, followed by ‘Yeh Dillagi’ in 1994 established that Kajol had inherited nothing but the best from her illustrious filmi lineage.
 

But, of course, what catapulted Kajol into the top rung was ‘Dilwale Dulhaniya Le Jayenge’ in 1995, with Badshaah Khan – Shah Rukh. With her self-effacing, endearing, and lifelike performance, Kajol tiptoed into the hearts of millions of Indian fans.
At a time when most actresses in her league would evade any unconventional or negative role, Kajol made an unwavering move to tread onto the road less traveled. Her resplendent portrayal of a dark character in ‘Gupt’ made other actresses revise their own benchmarks. Then, again, her twin-role in ‘Dushman’ gave the audiences hair-rising entertainment.
Spontaneity and versatility are two virtues that have set apart Kajol from the rest of her kin. She could dissolve herself into the character of Simran in ‘Dilwale Dulhaniya Le Jayenge’, draped in chiffons, silks and saris, with as much dexterity she could transform in to the tom-boy Anjali in ‘Kuch Kuch Hota Hai’, sporting sneakers, track-pants, caps and a short-crop hair-cut. Her stellar performance in ‘KKHH’ is indeed one of her best she has delivered so far."