Kareena began her acting career at a young age, making her screen debut in the 2000 film "Refugee," directed by J. P. Dutta. Her breakthrough performance came in 2003 with the film "Jab We Met," which earned her critical acclaim and commercial success. Since then, she has appeared in a wide range of films, including "Aitraaz," "Kya Love Story Hai," "Jhankaar Beats," and "Singh is Kinng."