Priya Koothrappali is one of the lead attorneys for the biggest car company in India, and the younger sister of Raj Koothrappali.She is also hot, which does not go unnoticed by Howard Wolowitz and Leonard Hofstadter, who pinky swear not to go after her -- a promise which Leonard promptly breaks, much to the displeasure of Raj.Leonard falls for her hard, but Priya initially sees their relationship as purely casual. It later becomes more serious, which makes Penny, Leonard's neighbor and ex-girlfriend by that point, insanely jealous. Priya also turns out to be controlling and goes about trying to change Leonard.She lives in fear of her strict Indian parents finding out about their relationship.Background: She graduated from the top of her class from Cambridge University. She is licensed to practice law in three countries.Her keen legal mind is able to poke holes in Sheldon Cooper's rigid Roommate Agreement with Leonard.