Dhanush and director Rajkumar Periasamy are all set to collaborate for the first time on a film tentatively titled D55. As official updates continue to come in, the makers have announced that Mammootty has joined the ensemble cast. Mammootty officially joins Dhanush starrer D55 Taking to their social media handles, the makers of D55 shared a couple of images featuring Mammootty and director Rajkumar Periasamy. While sharing the update, the team wrote, “When the Big M chooses a story, it becomes history. Super excited to welcome Megastar Mammootty onboard D55! We are honoured! Thank you Mammootty sir.” Interestingly, this marks Mammukka’s return to Tamil cinema after a six-year gap since the release of Peranbu. Here’s the post: Earlier, the makers had announced that the film would feature actresses Sreeleela and Sai Pallavi as co-leads. Interestingly, this marks the second time Sai Pallavi has appeared alongside Dhanush, following their film Maari 2. Initially, the film was announced with another production house backing it. However, the previous producers reportedly backed out and transferred all rights to Dhanush’s home …