The star power behind D55, headlined by Dhanush, just got stronger. In the latest casting update, Sai Pallavi has officially joined the film, teaming up with Sreeleela to lead the female cast. The yet-untitled project is directed by Rajkumar Periasamy and marks another major collaboration in contemporary South Indian cinema.For Sai Pallavi, this announcement signals a busy and exciting phase. The actor reunites with Rajkumar Periasamy soon after their recent outing, Amaran, which starred Sivakarthikeyan in the lead.