Arnold Schwarzenegger's son Joseph Baena celebrates dad's birthday with the perfect tribute
The former professional bodybuilder turned 72 on July 30
Alongside a photo of himself and his dad at Gold's Gym, Joseph penned, “BIG happy birthday to the best training partner in the world! Love you dad 🎊🎉.”
Arnold's look-alike son, whom he shares with his former housekeeper Mildred Baena, has inherited the actor's love for bodybuilding.
The former California governor also has four children with his ex-wife Maria Shriver: Christopher Schwarzenegger, 21, Patrick Schwarzenegger, 25, Christina Schwarzenegger, 28, and 29-year-old Katherine Schwarzenegger, who recently married Chris Pratt.