She's the glamorous wife of Chris Hemsworth who is known for her gym-honed physique and age-defying complexion. Elsa Pataky, 42, revealed a generous glimpse of side-boob as she hit the beach with husband Chris Hemsworth, 35, their twin sons Tristan and Sasha, four, and six-year-old daughter India in Byron Bay on Saturday Going braless for the occasion, Elsa was clad …