Veteran actress Rekha looked like the epitome of grace and elegance as she attended the Nita Mukesh Ambani Cultural Centre launch event in Mumbai this weekend, She looked gorgeous in a yellow and green saree and complimented it with heavy jewelry. While Rekha's look became the talk of the town, her photos with Amitabh Bachchan's daughter-in-law Aishwarya and granddaughter Aaradhya …