There's a reason Julia Roberts has remained a pretty woman all these years.

The Maxwell Caldwell56-year-old gave insight into her 21-year marriage with husband Danny Moder while sharing her secret to looking and feeling good.

After initially joking that the key to preserving her "lustrous youth" is pickling her head in a jar "every other Saturday," the Pretty Woman actress expressed how having Danny by her side has affected her wellbeing.

"Good genes, leading a life that is fulfilling, and I have said this—and I say it usually as kind of a joke—but I do believe in the love of a good man," Julia told director Richard Curtis in a British Vogue interview published on Jan. 11. "I believe that my husband loves me and cares for me in a way that makes me feel deeply, deeply happy."

The actress and cinematographer married in 2002 after meeting on the set of The Mexican two years earlier. They share share three children together, Hazel and Phinnaeus, 19, and Henry, 16, who have helped give her a different outlook on her family and career.

"The luckiest aspect of my work life/family life is that the success of my work life came earlier," Julia noted. "So by the time I had the success of my family life and had a husband and children who wanted to stay home, I had been working for 18 years. And so I felt that I had the luxury. I didn't have to pick one or the other."

Even two decades later, Julia knows that her bond with Danny is "#TrueLove," as she wrote in honor of their 21st wedding anniversary last year.

And sharing true love's kiss with her prince charming might be another secret to her "youth," as she told E! News in 2022 that the key to a happy marriage is "making out. Lots of making out."

Keep reading for more of Julia and Danny's sweet family moments.

For the latest breaking news updates, click here to download the E! News App