The bubbly actress with hazel eyes started her career with 'Raja ki ayegi baraat', even though the film was not a success, but Rani's acting was noticed by the critics and she was rated as the future super star. After that Rani didn't looked back and she flourished as an actress film by film. She was in the news with her wonderful performance in Ghulam and with the third movie Rani was in headlines again receiving the Best Supporting Actress award from Filmfare for her active and playful performance in Kuch Kuch Hota Hai thus enhancing herself in the Bollywood.
Rani being cousin of Kajol; one of the leading actress of Bollywood, had germs of acting from the very start and was considered to rise more higher than Kajol.
In February 2005, Filmfare Magazine published her face among the "Ten Most Powerful Names of Bollywood"; she was the only woman to receive such an honour. She was ranked eighth on the Power List in February 2006, configuring the highest ranking for a woman. Rani was also ranked number one in the Filmfare Top Ten Actresses' listing both years, 2004 and 2005. In 2005, she worked with the biggest production houses and banners: Black, Bunty aur Babli and The Rising. These three movies were amongst the top ten grosser of the year. Paheli, while only moderately successful, was India's official entry to the 2006 Oscars.