CETINJE, MONTENEGRO - MARCH 18: . Camilla, Duchess of Cornwall, walks in the town center with her current biographer Penny Junor (2nd from R) on March 18, 2016 in Cetinje, Montenegro. The Prince and Duchess are visiting Croatia, Serbia, Montenegro and Kosovo. (Photo by Sean Gallup/Getty Images)

CETINJE, MONTENEGRO - MARCH 18: . Camilla, Duchess of Cornwall, walks in the town center with her current biographer Penny Junor (2nd from R) on March 18, 2016 in Cetinje, Montenegro. The Prince and Duchess are visiting Croatia, Serbia, Montenegro and Kosovo.  (Photo by Sean Gallup/Getty Images)