“The Terminator” and Governor of California are just a few titles Arnold Schwarzenegger has held throughout his lifetime. The 73-year-old actor has a new label now — grandpa — after his daughter, 30-year-old author Katherine Schwarzenegger, welcomed a baby girl! Katherine and her husband, 41-year-old Jurassic World star Chris Pratt, announced the arrival of their first child together on Aug. 9, and we learned the first thing Arnold did when he heard the happy news.