On Friday, Christopher Schwarzenegger's sister, Katherine Schwarzenegger, took to social media to share a series of photos from a family outing on Cape Cod.

Christopher Schwarzenegger is drawing attention after debuting a dramatic weight-loss transformation in a new family photo shared by his sister, Katherine Schwarzenegger Pratt, on Instagram. The Aug.

Christopher Schwarzenegger shows off his impressive 30-pound weight loss during a family boat day with Arnold Schwarzenegger, Maria Shriver, and siblings.