Aishwarya Rai Bachchan penned a heartfelt note for Abhishek Bachchan on his 50th birthday. The actress took to social media to mark the milestone, sharing an adorable childhood picture of Abhishek. Along with the throwback, she poured her love into a warm birthday message. She wrote, "Happy HAPPY 50th Birthday dearest Babyyy-Papa with lots of love, peace, happiness, contentment and best health God Blesssss Stay Golden...