Varun Dhawan, who turns a year older on April 24, will spend his special day on the sets of director Abhishek Varman’s ‘Kalank’. The ‘October’ star, who turns 31 on Tuesday, has already shot for his introductory song for the film before his big day and will spend the rest of the day on the sets. However, Abhishek is making sure that the birthday boy has a feast on the sets of the film. “A cake cutting ceremony along with a lavish menu, which will include all of Varun’s favourite delicacies, is being planned,” informs a source close to the development. Apart from Varun, ‘Kalank’ stars Sanjay Dutt, Madhuri Dixit, Sonakshi Sinha, Alia Bhatt and Aditya Roy Kapur.