Dia Mirza is going through a tough phase in her personal life as the actress lost her niece, Tanya. Recently, she informed her fans and followers about the untimely demise of the young girl through an Instagram post. On Wednesday, she penned a heart-melting note along with an adorable picture paying a tribute to her and remembering the good times spent with her. Dia shared that Tanya was her firstborn. In a long note, Dia mentioned, “