Arnold Schwarzeneggeris 74!
In honor of his birthday on Friday, two of the actor’s kids —Katherine Schwarzenegger PrattandJoseph Baena— celebrated their dad on their respective Instagram accounts.
“HAPPY BIRTHDAY DADDY!” Katherinewrote alongside a series of imagesof herself and her dad when she was growing up. “I love you so much and can’t wait to celebrate you ! Have the best day ever!! 🥰♥️🙏”
The sweet snaps included one of Katherine and her dad riding horses, as well as a silly shot of the pair playing in the pool together.
Joseph also showed his dad some love, posting a photo of himself and Schwarzenegger dining out at a restaurant. Both men smiled as they clinked their glasses together.
“Happy Birthday Dad!” Josephcaptioned the post. “I hope your pump was juicy and may your day be filled with lots of schnitzel, schnapps and stogies!!!”
katherine schwarzenegger/instagram; Joseph Baena/instagram

Schwarzenegger has five children total. He shares Katherine, 31,Christina, 29,Patrick, 27, and Christopher, 23, with ex-wifeMaria Shriver.
Joseph is his youngest son, whom he fathered with his former family housekeeper, Mildred Baena. The 23-year-old has followed in Schwarzenegger’s footsteps, pursuing both acting and bodybuilding. He is also a realtor.
In May, Joseph shared a selfie of himself and his dad hitting the gym for a difficult workout session.
Arnold Schwarzenegger and Joseph Baena.Joseph Baena/instagram

“This selfie was taken moments before my dad suggested I do ‘forced reps’ for the rest of the workout,” Baenawrote in the caption. “You have to go all out and absolutely NO cheating when you train with him, so you know I’m going to be hurting tomorrow.”
Baena added, “Overloading on the rows, bench press, pull downs, etc… thankfully my studly training partner helped me get every last rep. This is another great approach to training and a fantastic way to build size and strength! Try it out with your training partner 💪.”
Schwarzenegger commented on the post with the emoji: “💪.”
Last year, Schwarzenegger became a grandpa when Katherine welcomed her first child, a daughter named Lyla, with husbandChris Pratt.
RELATED VIDEO: Arnold Schwarzenegger Hilariously Confuses Son-in-LawChris PrattwithChris Evans: ‘I’ve Screwed Up’
In April, theTerminatoractor said whileappearing virtuallyonJimmy Kimmel Live!that the new gig as a grandfather is “fantastic,” but “it makes me feel old to think about now I have a grandchild.”
Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
Added the former California governor: “They’re doing really great together as parents.”
source: people.com