The 44-year-old actress and the 69-year-old actor were joined on the red carpet by his co-star Diane Keaton and director Rob Reiner.
Earlier in the week, Catherine and Michael were seen arriving on a flight at LAX Airport.
“A lot of it has to do with age,” Michael recently shared to People about his relationship with Catherine. “When you’ve accomplished a certain amount in your career, you’re not so focused on your ambitions. It makes you appreciate – and hopefully you do that sooner rather than later – the value of your partner.”
He added, “Like a lovely orchid, or anything else that’s nurtured, marriage prospers and grows, but if it’s ignored, it withers.”
25+ pictures inside of Catherine Zeta-Jones and Michael Douglas at a premiere… More Here! »