Popular and long-running drama, Yeh Rishta Kya Kehlata Hai (Director's Kut) will witness the entry of a prominent character. We have been told that D3 fame actress Mohena Singh has been signed to portray the role of Karthik’s (Mohsin Khan) elder sister. “Mohena will play Keerthi, a married woman who will not be happy with her conjugal life. As the plot will progress, her role will blossom and she will go on to become the new girl in Naksh’s life (played by Rohan Mehra earlier),” informed a source. We reached out to Mohena for a comment but she remained unavailable. Tellychakkar.com exclusively reported about Parul Chauhan playing Karthik’s step mom and Sandeep Rajora being brought in to play the dad. Keep reading Tellychakkar.com for more updates.