Catherine Zeta-Jones took to social media to pay tribute to her movie legend father in law, the late Kirk Douglas on what would have been his 104th birthday! Furthermore, her husband and Kirk’s son, Michael Douglas did the same!

The actress posted a black and white picture that features herself and her late father in law on her IG account.

The pic shows Kirk giving his daughter in law a sweet kiss on the cheek while at a gala event, all dressed up for the occasion.

in the caption, she wrote: ‘Missing you every day. Happy birthday Pappy 💕.’

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As fans remember, Kirk Douglas passed away earlier this year, on February 5, in his own Beverly Hills house.

The legend was surrounded by his family members at the time of his passing.

Michael Douglas, his son, also paid tribute to his father by posting a video on his IG account.

Alongside the touching clip, he wrote: ‘Happy Birthday Dad! I miss you and thank you for always giving the best advice! Love, Michael.’

It showed a montage of pictures of the father and son throughout the years and also included a voice over by Michael sharing the best piece of advice he had ever gotten from his dad.

‘The best advice my father gave me was, ‘Whatever you do, you do it to the best of your ability. You leave that job knowing that you could not have done any more, and then walk away, you have done the best. Do not look back,” the voiceover says.

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This isn’t the first time the couple is commemorating Kirk since his death.

They also remembered his legacy back in May during an interview for ET.

At the time, Michael called him ‘one of a kind,’ stressing that there was no one like him in the industry!