They're the friendliest exes the Royal Family have ever seen.
And this week, they really proved it by banding together for a family passion project.
Speaking to People about the networking initiative, Prince Charles' younger brother explained: "They're involved, as is the Duchess. She has a number of different things she is helping with. It's a family business – we're getting on with it."
"The comment I have had mostly tonight is about the massive movement that has been made by the pitching companies – from where they were at boot camp a month ago to where they are now. The work that we have been able to do during that training period has allowed them to improve considerably," the 57-year-old said.
"I've seen pitching companies pace up and down in here looking really worried before. This time they were nervous, but they were confident in what they were doing and gave it their all."
While the Duchess added she was "proud of the duke" following his address to the crowd.
Watch this hilarious flashback video of Prince Andrew and Sarah Ferguson joke about before they get married
The Yorks announced their divorce in 1996 but have remained firm friends since their split. Up until 2015, they lived together at their Royal Lodge in Windsor.
Speaking about their affectionate friendship, the mother-of-two told the Kyle & Jackie O Show last year: "We're divorced to each other right now, [but] we've never really left each other. Just because in our fairy tales when we were little, we were brought up with along comes the prince on a white charger in the castle."
"What if the real true thing is to find yourself and to find peace and happiness within yourself? The true castle is you! And then after that, see what happens," she said.