Joshua Goldman
Joshua Goldman
min read · September 25, 2025 · Entertainment

Michael Douglas's 'Birthday Sister' Nickname for Catherine Zeta-Jones Sparks Buzz

Michael Douglas left his fans in shock after using a 'weird' nickname for his wife Catherine Zeta Jones

MICHAEL DOUGLAS LEAVES FANS GASPING WITH WEIRD NICKNAME FOR CATHERINE ZETA-JONES

In a jaw-dropping display of birthday love, Hollywood legend Michael Douglas, 81, left his fans stunned with a peculiar nickname for his stunning wife Catherine Zeta-Jones. The Basic Instinct star took to social media to wish his beloved partner a happy birthday, but it was the 'weird' moniker that had everyone talking.

The couple, who share the same birthdate of September 25 - albeit 25 years apart - posted gushing tributes to each other on their respective Instagram accounts. However, Douglas's post sparked confusion and amusement among fans, as he referred to Zeta-Jones as his 'birthday sister'.

The couple, who were both born on September 25 but 25 years apart, took to social media to wish each other a happy birthday with gushing tributes. However, the Basic Instinct actor, now 81, sparked mixed reactions with his post when he referred to his wife as his 'birthday sister'

Many questioned the unusual nickname, while others expressed surprise at learning that they share the same birth month and date. One user commented, "Did you just call your wife sister??" while another person asked, "What did he mean by birthday sister?"

Douglas's comment read: "To my birthday sister... What a joy celebrating another year with you! Congratulations on your spectacular game at the Celebrity Ryder Cup. Happy birthday to the love of my life @CatherineZetaJones."

The Fatal Attraction star's affectionate post was met with mixed reactions, but one thing is certain - his wife Zeta-Jones is the love of his life. In her response, she gushed: "Happy birthday darling! I can't think of anyone else to share a birthday with." The actress also shared a series of throwback photos throughout the years on her social media page, hinting at their whirlwind romance.

'To my birthday sister,' Douglas began in his tribute to his wife of 25 years. 'What a joy celebrating another year with you!' He added: 'Congratulations on your spectacular game at the Celebrity Ryder Cup. Happy birthday to the love of my life @CatherineZetaJones'

The couple's romance began in 1998 when Douglas watched Zeta-Jones in The Mask of Zorro. They met later that same year at the Deauville Film Festival and got engaged in December 1999. After a brief separation in August 2013, they reconciled and have been inseparable ever since.

Their love story is one for the ages - Douglas has said he knew Zeta-Jones was the one for him after watching her on screen. Back in 2015, he spoke about their marriage and brief separation during an appearance on The Ellen DeGeneres Show: "It can't be a one-way street. But I'm crazy about her. And yeah, I think every couple has their difficult times. The only problem is, as you well know, we're all in the public eye, and it tends to get a little more exposed than most. We're back stronger than ever."

As the couple prepares to celebrate their upcoming 25th wedding anniversary, fans can't help but feel a sense of joy and nostalgia when thinking about their love story. The long-time couple has two children together - son Dylan, 25, and 22-year-old daughter Carys - who wished their parents happy birthday via likes on Zeta-Jones's post.

In the comments section, Zeta-Jones shared a gushing reply. 'Happy birthday darling,' she wrote alongside red heart emojis. 'I can't think of anyone else to share a birthday with'

Douglas also has a son, Cameron, 46, from his past marriage to Diandra Luker. Throughout their marriage, the couple has been open about their love for each other, and it's clear that they still have that spark after all these years.

As one fan aptly put it: "Well that's just d* cute. Same birthdays. Happy birthday!" TheScholarlyNote.com can't help but agree - Michael Douglas and Catherine Zeta-Jones are truly a match made in heaven.

READ MORE ABOUT MICHAEL DOUGLAS AND CATHERINE ZETA-JONES'S LOVE STORY

On her social media page, she also posted a tribute dedicated to her beau as she shared a series of throwback photos throughout the years

In related news, the couple's daughter Carys posted her own birthday message to her parents on Instagram, with a sweet photo of them embracing. The post read: "Happy birthday Mom and Dad! I'm so grateful for you both!" Meanwhile, their son Dylan also wished his parents happy birthday via a like on Zeta-Jones's post.

It's clear that the couple is still going strong after all these years - and we can't get enough of their love story. Stay tuned for more updates on this power couple as they continue to celebrate their special day!

She wrote in her caption: 'Happy birthday Michael! Sharing this special day with you is once in a lifetime!'

Zeta-Jones also took to her Instagram Story to share a collage of throwback photos showing her and her husband packing on the PDA for a photoshoot

She also shared a glamorous selfie, showing off her bombshell hair and makeup, as she hinted at how she spent 'the night before [her] birthday'

Douglas and Zeta-Jones have been married since November 2000 and are also preparing to celebrate their upcoming 25th wedding anniversary; pictured November 2009 in New York City

Elsewhere in Douglas's comments section, many fans shared their reactions to his nickname for his wife while others expressed surprise at learning they share the same birth month and date. One Instagram user commented: 'Did you just call your wife sister ?? Or am I tripping ??'

'That's his wife not his sister,' another person wrote. 'What [did] he mean [by] birthday sister ?'

In addition to the confused fan comments, there were a slew of birthday wishes for the longtime couple. Octavia Spencer commented: 'Well that's just d*** cute. Same birthdays. Happy birthday!'

A fan, who seemingly also learned that Douglas and Zeta-Jones celebrated their birthdays on the same day, also wrote to the couple: 'Happy birthday Michael!!! I didn't know you guys had the same birthday!!'