Michael Douglas and Catherine Zeta-Jones have a combined age of 135, but they're still acting like a pair of newlyweds and crediting their insatiable sex drives as the key ingredient in their long-lasting love story.

Jones' $21.5m Central Park home with her husband Michael Douglas has grand gilded gold features - see rare photo

Catherine Zeta-Jones shared a nude photo of herself on Instagram as a birthday gift for her husband Michael Douglas' 80th birthday.

The first post was a throwback black-and-white picture of them from the beginning of their relationship (they met in 1998). “Happy Birthday to Michael and to me!!” the Chicago star wrote in the caption. “This was us on our birthday 25 years ago! I love you with all my heart ♥️.”

Catherine Zeta-Jones put on her birthday suit in honor of her husband, Michael Douglas’ 80th birthday earlier this month.

Celebrating their shared birthday on Sept. 25, Catherine Zeta-Jones and Michael Douglas were joined by a very special guest

Michael Douglas and Catherine Zeta-Jones have long been synonymous with Hollywood stardom, and now their daughter, Carys Zeta Douglas, is poised to continue their legacy. At just 21, Carys has already begun to make her mark in the entertainment industry while balancing her academic pursuits.