Kaif began her modeling career at the age fourteen; her first job was for a jewelry campaign. She continued modeling in London under a contract with the Models 1 Agency and did campaigns for houses such as La Senza and Arcadius, and even walked on the London Fashion Week.[3]Kaif's London modeling-work led to her discovery by London-based filmmaker Kaizad Gustad, who gave her a part in his film Boom (2003). She moved to Mumbai and was offered a number of modeling assignments. However, filmmakers were initially hesitant to sign her because she could not speak Hindi.[8][9]
Kaif saw moderate success with the 2005 film Sarkar, where she played the bit part of Abhishek Bachchan's girlfriend, and Maine Pyaar Kyun Kiya (2005), where she was paired opposite Salman Khan.
In 2007, Kaif appeared in her first major hit movie, Namastey London, wherein she starred as a British Indian girl alongside Akshay Kumar for the second time after the box office letdown Humko Deewana Kar Gaye (2006). Her run of hit films continued with Apne, Partner, and Welcome.[10]
In 2008, she played the villain role for the first time in Abbas-Mustan's hit action thriller Race. She played the role of Saif Ali Khan's secretary who is secretly in love with his hostile stepbrother (played by Akshay Khanna). Kaif's second release of the year was Anees Bazmee's production Singh Is Kinng, opposite Akshay Kumar. The film was a big success at the box office. Kaif's final release of the year, Subhash Ghai's Yuvvraaj, was a commercial failure[11], but its script has made its way into the Library of the Academy of Motion Picture Arts & Sciences for artistic merits, original screenplay with a substance, and the film as a whole
Kaif's first release for 2009, New York, with John Abraham, was a critical and commercial success.[14] Kaif's performance was highly regarded. Wrote critic Taran Adarsh, "Katrina gives you the biggest surprise. Known for her glamour roles, Katrina proves that she can deliver if the director and writer offer her a role of substance. She's outstanding. In fact, people will see a new, different Katrina this time."
She next played a bit role as a biker chick in the multi-starrer action film Blue, popularly known as India's first underwater thriller,[16] which performed decently at the box office.[17] The film was not successful.
