Michael Douglas shared a tribute to his father, Kirk Douglas, who turned 103 on Monday, Dec. 9.

“Happy birthday Dad! You are a living legend and your entire family sends you all the love in their hearts! #KirkDouglas #103” Michael posted with a photo of himself kissing his father’s forehead.

 
 
 
 
 
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Happy birthday Dad! You are a living legend and your entire family sends you all the love in their hearts! #KirkDouglas #103

A post shared by Michael Douglas (@michaelkirkdouglas) on

Michael’s wife, actress Catherine Zeta-Jones, also wished her father-in-law best wishes on Monday.

“This guy on my knee, is 103!!!!!Happy Birthday Pappy!!! I love you with all my heart. 😘❤️”she wrote alongside an undated throwback image of Kirk sitting on her lap.

 
 
 
 
 
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This guy on my knee, is 103!!!!!Happy Birthday Pappy!!! I love you with all my heart. 😘❤️

A post shared by Catherine Zeta-Jones (@catherinezetajones) on

Michael Douglas’ son Cameron wrote to his grandfather “a gift to the world; a guiding light and source of inspiration. “I Love you. #103 to #infinity,” in a birthday message.

 
 
 
 
 
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Happy Birthday Pappy…you are a gift to the world; a guiding light and source of inspiration to me. I Love you. #103 to #infinity

A post shared by Cameron Douglas (@cameronmorrelldouglas) on

Last month, Michael Douglas revealed to Jimmy Kimmel that his father wanted just a small birthday celebration as opposed to the extravagant affair the family usually presented year after year.

“So, he was 100, big birthday, big birthday. The trouble is, when you’re 100, you don’t really want a big birthday,” Michael explained. “I threw a big party for him, it was great.”

“101. You know, ‘OK, let’s have a nice party.’ ‘Again? I don’t…’ ‘Dad, it’s 101 years old. You have to have a birthday.’ 102…” he continued. “He’s begging me, he’s got tears running down. ‘Let’s just have dinner, the family together. Bring the kids.'”

Michael also shared in an image of himself with his father after receiving a Golden Globe nomination for Best Performance by an Actor in a TV series – Musical or Comedy, for “The Kominsky Method.” 

“12.9.2019 what a great day!” Michael added. “Thank you to the [Hollywood Foreign Press Association] for the @GoldenGlobes nomination, and for making my Dad proud on his 103rd birthday! #TheKominskyMethod.”

 
 
 
 
 
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12.9.2019 what a great day! Thank you to the HFPA for the @GoldenGlobes nomination, and for making my Dad proud on his 103rd birthday! #TheKominskyMethod

A post shared by Michael Douglas (@michaelkirkdouglas) on

Happy birthday, Kirk Douglas!