Bharatanatyam ‘star’ is born Rubaina Gambhir, 14, a student of Springdales School, Pusa road, New Delhi and  senior diploma certificate holder in Bharatanatyam from Prayag Sangeet Samiti, Allahabad on January 10 performed  Arangetram (debut on-stage performance of a classical art student, after undertaking years of training. It is a public graduation performance for any art form ) at at Triveni …