Arnold Schwarzenegger’s Son Joseph Baena Wins His First Major Bodybuilding Competition

Muscleman Arnold Schwarzenegger’s look-alike “secret” son is following in his biceps — winning his first major bodybuilding competition.

The Terminator star’s “love child” Joseph Baena, 28, recently announced on Instagram he snagged top honors in several categories at the NPC Natural Colorado State Competition.

But the prize came after Arnold, 78, confessed the revelation that he’d fathered Joseph wrecked his marriage and building a father-son relationship hasn’t been easy.

“It was tough on everyone,” the True Lies star admitted in 2015 to Howard Stern, per Page Six.

The National Enquirer was first to reveal Joseph’s identity in a blockbuster exclusive in 2011.

As we reported, Arnold was married to Maria Shriver, a member of the politically powerful Kennedy clan, when he fell into an illicit affair with their housekeeper Mildred Baena.

Mildred was married at the time so her pregnancy didn’t raise eyebrows and she reportedly told everyone that Joseph was her husband’s child.

But by the time Joseph was 8, there was no hiding the truth — Joseph looked exactly like Arnold.

“I realized there was very little doubt that he was my son,” says the Total Recall star, who has four children with ex Maria — Katherine, 36, Christina, 34, White Lotus hunk Patrick, 32, and Christopher, 28.

When a suspicious Maria confronted Mildred, the housekeeper confessed.

Humiliated, Maria filed for divorce in July 2011, citing irreconcilable differences. Arnold admits the divorce brought him to his knees.

“I had personal setbacks, but this was, without any doubt, the biggest setback and the biggest failure. Without any doubt,” he says.

With his marriage in tatters, Arnold assumed full financial responsibility for his “secret” son and bought a home for Joseph and his mother.

Joseph recently posted a picture showing his proud dad — who won seven Mr. Olympia titles and five Mr. Universe titles — looking on while he pumped iron.

He captioned the photo, “Mission Accomplished!”

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