United Kingdom, April 10 -- Queen Camilla credits friendship, laughter and "getting on with life" as key to her marriage to King Charles.

The couple celebrated their 20th wedding anniversary on Wednesday (09.04.25) during their state visit to Italy and Camilla admitted she was amazeed at how long it had been since they tied the knot.

Speaking to the British media during the trip, she said: "20 years, who could believe it was 20 years?

"What is the secret? I don't know.I suppose it's just sort of friendship, really.

"Laughing at the same things, getting on with life. I suppose doing this [public engagements] takes up most of the time.

"We are always going in different directions, like ships that pass in the night really. We whizz past...