Priya Koothrappali (Aarti Mann) is Raj's younger sister. Having graduated at the top of her class at the University of Cambridge (where, like Sheldon, her roommate was from Texas), she is one of the lead attorneys at India's biggest car company. Leonard and Priya date for much of season 4 and part of 5 when she moves to Los Angeles, but break up when Priya moves back to India and cheats on Leonard.