King Charles and Queen Camilla faced numerous obstacles leading up to their April 9, 2005 wedding day. Public perception of their relationship—and of Camilla Parker Bowles in general—was low given their longtime affair while Charles was still married to Princess Diana.

In a relationship spanning some 54 years, Charles and Camilla have inevitable had a few disagreements. But, insiders say, their relationship is strong enough to weather any storms

Longtime royal photographer Arthur Edwards has noticed a major shift in Charles since he married Camilla two decades ago this week.