A happy and healthy Christopher Schwarzenegger enjoyed quality family time under the sun. Following his recent 30-pound weight loss journey, Christopher, 27, appeared shirtless in two photos shared by his sister Katherine Schwarzenegger via Instagram on Sunday, September 14. In the Instagram carousel, which captured several members of the Schwarzenegger clan enjoying a lake day aboard a boat, Christopher was seen smiling in blue and white shorts alongside a family friend who wrapped her arms around his bare torso.