Actress and former miss world Aishwarya Rai Bachchan has given birth to a baby girl, the first daughter for her and her actor husband Abhishek Bachchan. The delivery took place at the Seven Hills Hospital in Marol, Mumbai. A proud grandfather, Amitabh tweeted on Wednesday morning, "T 561 - I AM DADA to the cutest baby girl !! Twitter has been the speculation ground for the Bachchan baby since long. There have been speculations on the exact date of delivery and the gender of the baby. The hospital has been under tight security for the past three days in expectation of the youngest member of the Bachchan family. Aishwarya was admitted to the hospital Monday night, according to her spokesperson. Aishwarya, 38, developed labour pains around 4 a.m on November 16 and was taken to the labour room where the delivery took place after nearly six hours. Hospital sources said the delivery was normal and came a few minutes before 10 a.m.