Priya plays the part of Raj’s younger sister. She is a law student who we meet during the 4th season. She dates Leonard, and the two don’t tell Raj, who eventually finds out.
Priya agrees to continue to date Leonard under the condition that he cuts off contact with Penny. When Priya’s parents find out about the relationship, they are extremely disappointed and force her to return home. The couple has a long-distance relationship for some time, ultimately finding it frustrating and breaking their loyalty to one another.
Alessandra Torresani as Claire – Then
Claire works as a screenwriter and bartender. She meets Raj and Howard at the comic book store. She wants Raj to write a script with her for a children’s science fiction movie.
Raj is into her, but Claire has no interest in him. Raj breaks up with Emily in order to pursue Claire, which only further repulses her. At one point, Claire does have an interest in Raj, who begins to date both Claire and Emily simultaneously, eventually breaking up with both women.
Alessandra Torresani as Claire – Now
Torresani was cast in various small parts before being chosen to play the part of Claire in TBBT. Among her gigs, you can find the series "Husbands," "Two and a Half Men," and "American Horror Story."
She played the role of Amber in the movie called "Step Sisters" in 2018 but hasn't done much since.
Aarti Mann as Priya Koothrappali – Now
The actress has been cast in several TV series since TBBT. She played Dr. DaSilva in the rom-com drama "I’ll See You in My Dreams," as well as María Monroe in "Suits" and Agent Laura Kenney in "Scandal."
Recently, she played the part of Holly Harner in an episode of "Grey’s Anatomy" and filmed a drama called "Love Sonia," playing the part of Jiah.
Sara Rue as Stephanie Barnett – Then
Stephanie works as a doctor and highly distinguished surgical resident at Fremont Memorial Hospital. She is introduced in season 2 when Howard tries to seduce her and allows her to drive a Mars Rover.
Instead, Stephanie meets and falls for Leonard, and the pair ends up dating. Stephanie moves all of her belongings into Leonard’s apartment, and Leonard soon ends their relationship through a text message.