Arnold Schwarzenegger’s love child Joseph Baena, 23 is a spitting image of his dad as he does a bodybuilding pose

ARNOLD Schwarzenegger’s love child Joseph Baena looked just like his famous father while posing in a bodybuilding stance.

The 23-year-old is the fitness legend's son from an affair he had with his housekeeper Mildred Patricia Baena more than 20 years ago.

Joseph took to his Instagram Stories to share a snap of himself wearing nothing but black shorts as he flexed and showed off his biceps.

He wrote: "Trying something a lil dif."

Arnold won Mr. Olympia title seven times between 1970 and 1980 - a competition that awards the best in professional men's bodybuilding.

This comes less than a month after Joseph showed off his ripped physique in a short video that showed him working out at the gym.

He wrote at the time: "For me shoulders have always been the hardest muscles to grow.

"I’ve learned that the only real way to grow them is by going all out and burning out till you can’t even lift your arms!"

Joseph was born in 1997 after his mom and The Terminator star had an affair while he was married to Maria Shiver.

Mildred worked for the family for nearly 20 years before retiring in 2011, and previously told the LA Times that she received a severance payment and “left on good terms with them.”

The iconic action movie star reportedly learned about Joseph when he was 8-years-old as he apparently began to look like him.

However, Maria was also suspicious about the child and confronted Arnold in a therapy session the two had.

In his book Total Recall: My Unbelievably True Life Story, Arnold recalled: “The minute we sat down, the therapist turned to me and said, ‘Maria wanted to come here today and to ask about a child — whether you fathered a child with your housekeeper Mildred.'"

He added: “I told the therapist, ‘It’s true.'”

Arnold would then go on to issue an apology to his wife and his kids.

Arnold and Maria tied the knot in 1986, parting ways in 2017, six years after the affair came to light.

The former couple share four kids: daughters Christina, 29, and Katherine, 31, and sons Patrick, 27, and Christopher, 23.

The Hollywood star turned some heads back in October when he revealed that he underwent a procedure to have his aortic valve replaced to go with his new pulmonary valve that he had inserted in April 2018.

He wrote at the time: "I feel fantastic and have already been walking the streets of Cleveland enjoying your amazing statues. Thank you to every doc and nurse on my team!"

That came two years after he had a faulty pulmonary valve replaced in his heart left Arnold needing emergency surgery.

However, that did not keep the 73-year-old down for long as just a few days later he was seen with his girlfriend Heather Milligan, 46, out and about.