Indian businesswoman Isha Ambani attended Pink Ball in London in a custom Abu Jani-Sandeep Khosla creation that took 3,670 hours to create. She styled the look with her mother Nita Ambani's personal emerald jewels, including a bold heart-shaped emerald necklace, matching earrings and a diamond-studded emerald ring. Nita also joined the gala in a stunning Kanjeevaram saree.