India, July 20 -- In a rare family public appearance, actors Chris Hemsworth and his wife, actor Elsa Pataky were joined by their 11-year-old twins, Sasha and Tristan at Odeon Luxe Leicester Square cinema in London. Missing in frame was the couple's 13-year-old daughter India. What's more? The former's younger brother, actor Liam Hemsworth also attended the event with his girlfriend, model Gabriella Brooks. Even the actor brothers' parents - Craig and Leonie Hemsworth - were present for the premiere of Chris' docu series, where he explores science-backed methods to improve one's health. HTC...