Catherine Zeta Jones, 53, and Michael Douglas, 78, celebrate their joint birthday in a helicopter

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‘After 24 years of celebrating our special day together, I’m still looking forward to it’: Catherine Zeta-Jones, 53, and Michael Douglas, 78, share sweet Instagram posts on their joint anniversary

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They have been married for over 21 years.

And Catherine Zeta-Jones celebrated another joint birthday with husband Michael Douglas in style on Sunday as they enjoyed a helicopter ride together.

The actor, 78, and actress, 53, were both born on September 25, although Michael was born in 1944, while Catherine was born in 1969.

All smiles: Catherine Zeta-Jones celebrated another joint birthday with husband Michael Douglas in style on Sunday as they enjoyed a helicopter ride together

All smiles: Catherine Zeta-Jones celebrated another joint birthday with husband Michael Douglas in style on Sunday as they enjoyed a helicopter ride together

Michael and Catherine both took to their Instagram accounts to publicly wish each other happy birthday.

To acknowledge his wife’s special day, the Wall Street actor posted a throwback photo of the couple, writing, “Happy Birthday Catherine! I will always love you’

Catherine then shared a recent selfie of the two of them and an older one, which read: ‘It’s our birthday!! After 24 years of celebrating our special day together, I’m still looking forward to it. I love you!!! a la vote!!!!!!!!!!’

Celebrate in style: The actor, 78, and actress, 53, were both born on September 25, although Michael was born in 1944, while Catherine was born in 1969

Celebrate in style: The actor, 78, and actress, 53, were both born on September 25, although Michael was born in 1944, while Catherine was born in 1969

Celebrate in style: The actor, 78, and actress, 53, were both born on September 25, although Michael was born in 1944, while Catherine was born in 1969

Catherine looked glamorous in the selfie in a black and white mottled dress and opted for a smoky makeup palette.

Meanwhile, Michael cut a neat figure in a navy blue suit which he paired with a gray tie and crisp white shirt.

The actress later shared a video beaming at the camera while in a helicopter wearing a white sweater, black hat and large sunglasses.

1664176824 186 Catherine Zeta Jones 53 and Michael Douglas 78 celebrate their

1664176824 186 Catherine Zeta Jones 53 and Michael Douglas 78 celebrate their

'I love you always and forever': Michael and Catherine both took to Instagram accounts to publicly wish each other happy birthday

'I love you always and forever': Michael and Catherine both took to Instagram accounts to publicly wish each other happy birthday

‘I love you always and forever’: Michael and Catherine both took to Instagram accounts to publicly wish each other happy birthday

She turned the camera to her lover who waved as the couple flew over a lake.

She wrote: ‘All smiles as we start our birthdays!!! let the games begin!!!!!!’

It comes after Catherine paid tribute to her son as she watched him graduate from prestigious Brown University in May.

The Tony Award winner was in attendance when Dylan received his diploma after majoring in political science.

1664176825 40 Catherine Zeta Jones 53 and Michael Douglas 78 celebrate their

1664176825 40 Catherine Zeta Jones 53 and Michael Douglas 78 celebrate their

'It's our birthday': Catherine looked glamorous in the selfie in a black and white spotted dress and opted for a smoky makeup palette

'It's our birthday': Catherine looked glamorous in the selfie in a black and white spotted dress and opted for a smoky makeup palette

‘It’s our birthday’: Catherine looked glamorous in the selfie in a black and white spotted dress and opted for a smoky makeup palette

Birthday: The actor, 78, and actress, 53, were both born on September 25, although Michael was born in 1944, while Catherine was born in 1969

Birthday: The actor, 78, and actress, 53, were both born on September 25, although Michael was born in 1944, while Catherine was born in 1969

Birthday: The actor, 78, and actress, 53, were both born on September 25, although Michael was born in 1944, while Catherine was born in 1969

After the ceremony on Instagram, Catherine posted a photo of her son, dressed in traditional mortar and dress, accepting a kiss from his proud mother.

Captioning the image, she captioned: “Congratulations on graduating my boy, my pride, my joy, Dylan. I am inexplicably proud of you and I love you without words.’

Catherine and Michal’s younger child, daughter Carys, 19, will graduate from high school in 2021 and is expected to follow her brother’s educational path by also attending Brown.

Looks good: The actress later shared a video beaming at the camera while in a helicopter wearing a white sweater, black hat and large sunglasses

Looks good: The actress later shared a video beaming at the camera while in a helicopter wearing a white sweater, black hat and large sunglasses

Looks good: The actress later shared a video beaming at the camera while in a helicopter wearing a white sweater, black hat and large sunglasses

Having fun!  She turned the camera to her lover who waved as the couple flew over a lake.  She wrote: 'All smiles as we start our birthdays!!!  let the games begin!!!!!!'

Having fun!  She turned the camera to her lover who waved as the couple flew over a lake.  She wrote: 'All smiles as we start our birthdays!!!  let the games begin!!!!!!'

Having fun! She turned the camera to her lover who waved as the couple flew over a lake. She wrote: ‘All smiles as we start our birthdays!!! let the games begin!!!!!!’

Catherine shared photos from her graduation ceremony, writing:

‘What a proud day as our daughter Carys graduates cum laude for her International Baccalaureate! You rock, we love you.’

Proud daddy Michael added: ‘Congratulations to Carys and the entire class of 2021! Your mother and I are so proud of you!’

Family: Catherine paid tribute to her son as she watched him graduate from prestigious Brown University in May

Family: Catherine paid tribute to her son as she watched him graduate from prestigious Brown University in May

Family: Catherine paid tribute to her son as she watched him graduate from prestigious Brown University in May

Well done: Catherine and Michael's youngest child, daughter Carys, will graduate from high school in 2021 and is expected to follow her brother's path by also attending Brown

Well done: Catherine and Michael's youngest child, daughter Carys, will graduate from high school in 2021 and is expected to follow her brother's path by also attending Brown

Well done: Catherine and Michael’s youngest child, daughter Carys, will graduate from high school in 2021 and is expected to follow her brother’s path by also attending Brown