Who was pia in 3 idiots?

Pia was a medical student and classmate of the three protagonists in the movie "3 Idiots". She was played by actress Kareena Kapoor. Pia was intelligent, ambitious and determined to become a successful doctor. However, she also struggled with personal issues, such as her father's disapproval of her career choice. Throughout the movie, Pia develops a close friendship with Rancho (played by Aamir Khan) and gradually falls in love with him.