Kapoor next teamed with Shahid Kapoor for the fourth time in the romantic comedy Jab We Met (2007), in which she portrayed Geet Dhillon, a vivacious Sikh girl with a zest for life.
Director Imtiaz Ali was not a well-known figure before its production, with only one feature credit to his name, but Kapoor agreed to the film after being fascinated with his "mind-blowing" script.
She collaborated closely with Ali to build her character and was challenged on effectively portraying Dhillon's exuberant personality without making it caricaturish.
Jab We Met was received favourably by critics and became successful at the box office with global earnings of ₹509 million (US$7.1 million) against a budget of ₹150 million (US$2.1 million).
Jaspreet Pandohar of the BBC commented that the role required a mixture of naivety and spontaneity, and was impressed with Kapoor's effort.
The critic Rajeev Masand labelled her the film's "biggest strength, as she brings alive her character with not just those smart lines, but with the kind of candor actors seldom invest in their work."
Filmfare magazine featured it amongst the "Top 80 Iconic Performances" of Hindi cinema, and Kapoor was awarded the Filmfare Award for Best Actress and her second Screen Award.
While shooting for Jab We Met, Kapoor and Shahid ended their four-year relationship.
She admitted to being heartbroken by the split, but stated that "I hope one day we could be good friends.
He is a great guy."

The following year, Kapoor co-starred in Vijay Krishna Acharya's action-thriller Tashan, where she met her future husband in actor Saif Ali Khan.
Although a poll (conducted by Bollywood Hungama) named it the most anticipated release of the year, the film underperformed at the box office.
After providing her voice for the character of Laila, the love interest of a street dog named Romeo, in the Yash Raj Films and Walt Disney Pictures animated film Roadside Romeo, Kapoor played a mistrustful wife who believed her husband was unfaithful in Rohit Shetty's comedy Golmaal Returns.
A sequel to the 2006 film Golmaal: Fun Unlimited, the film had an ambivalent reception from critics, and Kapoor received mixed reviews.
The Indian Express believed the screenplay was derivative, concluding: "There is nothing particularly new about a suspicious wife keeping tabs on her husband, and there is nothing particularly new in the way Kareena plays it."
Golmaal Returns was a financial success with global revenues of ₹793 million (US$11 million).

In 2009, Kapoor was cast as Simrita Rai (a surgeon who moonlights as a model) in Sabbir Khan's battle-of-the-sexes comedy Kambakkht Ishq, opposite Akshay Kumar.
Set in Los Angeles, it was the first Indian film to be shot at Universal Studios and featured cameo appearances by Hollywood actors.
The film was poorly received by critics but became an economic success, earning over ₹840 million (US$12 million) worldwide; a review in Times of India described Kapoor's performance as "a complete let-down" and "unconvincing".
The box-office flop Main Aurr Mrs Khanna came next, following which she played the leading lady in the dramatic thriller Kurbaan, alongside Saif Ali Khan and Vivek Oberoi.
The film (which marked the directorial debut of Rensil D'Silva) featured Kapoor as Avantika Ahuja, a woman who is confined to house arrest after discovering that her husband is a terrorist.
Describing the film as "an emotionally draining experience", Kapoor explained that it was difficult to disconnect from her character.
The film was critically praised, and Kapoor received her fourth Filmfare Best Actress nomination.
Gaurav Malani of The Economic Times commented that after a long time the actress was given "a role of substance that brings her performing potential to the fore", while Subhash K. Jha described it as her "most consistently pitched performance to date" played "with splendid sensitivity" and "credib[ility]".

Kapoor's second Filmfare nomination that year came for Rajkumar Hirani's National Film Award-winning 3 Idiots, a film loosely based on the novel Five Point Someone by Che
Kapoor next teamed with Shahid Kapoor for the fourth time in the romantic comedy Jab We Met (2007), in which she portrayed Geet Dhillon, a vivacious Sikh girl with a zest for life. Director Imtiaz Ali was not a well-known figure before its production, with only one feature credit to his name, but Kapoor agreed to the film after being fascinated with his "mind-blowing" script. She collaborated closely with Ali to build her character and was challenged on effectively portraying Dhillon's exuberant personality without making it caricaturish. Jab We Met was received favourably by critics and became successful at the box office with global earnings of ₹509 million (US$7.1 million) against a budget of ₹150 million (US$2.1 million). Jaspreet Pandohar of the BBC commented that the role required a mixture of naivety and spontaneity, and was impressed with Kapoor's effort. The critic Rajeev Masand labelled her the film's "biggest strength, as she brings alive her character with not just those smart lines, but with the kind of candor actors seldom invest in their work." Filmfare magazine featured it amongst the "Top 80 Iconic Performances" of Hindi cinema, and Kapoor was awarded the Filmfare Award for Best Actress and her second Screen Award. While shooting for Jab We Met, Kapoor and Shahid ended their four-year relationship. She admitted to being heartbroken by the split, but stated that "I hope one day we could be good friends. He is a great guy."
The following year, Kapoor co-starred in Vijay Krishna Acharya's action-thriller Tashan, where she met her future husband in actor Saif Ali Khan. Although a poll (conducted by Bollywood Hungama) named it the most anticipated release of the year, the film underperformed at the box office. After providing her voice for the character of Laila, the love interest of a street dog named Romeo, in the Yash Raj Films and Walt Disney Pictures animated film Roadside Romeo, Kapoor played a mistrustful wife who believed her husband was unfaithful in Rohit Shetty's comedy Golmaal Returns. A sequel to the 2006 film Golmaal: Fun Unlimited, the film had an ambivalent reception from critics, and Kapoor received mixed reviews. The Indian Express believed the screenplay was derivative, concluding: "There is nothing particularly new about a suspicious wife keeping tabs on her husband, and there is nothing particularly new in the way Kareena plays it." Golmaal Returns was a financial success with global revenues of ₹793 million (US$11 million).
In 2009, Kapoor was cast as Simrita Rai (a surgeon who moonlights as a model) in Sabbir Khan's battle-of-the-sexes comedy Kambakkht Ishq, opposite Akshay Kumar. Set in Los Angeles, it was the first Indian film to be shot at Universal Studios and featured cameo appearances by Hollywood actors. The film was poorly received by critics but became an economic success, earning over ₹840 million (US$12 million) worldwide; a review in Times of India described Kapoor's performance as "a complete let-down" and "unconvincing". The box-office flop Main Aurr Mrs Khanna came next, following which she played the leading lady in the dramatic thriller Kurbaan, alongside Saif Ali Khan and Vivek Oberoi. The film (which marked the directorial debut of Rensil D'Silva) featured Kapoor as Avantika Ahuja, a woman who is confined to house arrest after discovering that her husband is a terrorist. Describing the film as "an emotionally draining experience", Kapoor explained that it was difficult to disconnect from her character. The film was critically praised, and Kapoor received her fourth Filmfare Best Actress nomination. Gaurav Malani of The Economic Times commented that after a long time the actress was given "a role of substance that brings her performing potential to the fore", while Subhash K. Jha described it as her "most consistently pitched performance to date" played "with splendid sensitivity" and "credib[ility]".
Kapoor's second Filmfare nomination that year came for Rajkumar Hirani's National Film Award-winning 3 Idiots, a film loosely based on the novel Five Point Someone by Che
Kareena Kapoor