Catherine Zeta-Jones gushes over Michael Douglas on 17th anniversary

Nov. 20 (UPI) -- Catherine Zeta-Jones couldn't help but gush about Michael Douglas on their 17th wedding anniversary.

The 48-year-old actress dedicated a sweet Instagram post to Douglas, her husband and "best friend," while celebrating the occasion Saturday.

"17 years ago today, I said 'I do' to my best friend and father of our two and a half month old son. Thought it could never get better than that day, but it did," Zeta-Jones captioned a photo of herself and Douglas at their wedding.

"Happy anniversary darling, Michael," she wrote. "With you, in my life, and Dylan and Carys, every day could be a twelve hour fantastic party at the Plaza in New York. Love you. #love #lovestrong."

Zeta-Jones and Douglas tied the knot at the Plaza Hotel in New York in front of such guests as Sean Connery, Jack Nicholson and Sharon Stone. The BBC declared the couple's nuptials the "wedding of the year" at the time.

Zeta-Jones and Douglas, who share 17-year-old son Dylan and 14-year-old daughter Carys, confirmed their reconciliation in 2015 after separating for several months in 2013. The 73-year-old actor confessed in January 2016 that saving his marriage took "work."

"It took work on both our parts," he said in an issue of AARP magazine. "I don't think there's much change of fixing a relationship if one of you is already out the door. I think we're both mellower and wiser. That comes naturally with time. We count our blessings."