As I started working on the Francesco Carracciolo for my KuK-Au, I also started working on the Cavour class. I tried to approximate the WWI dark bluish-grey that the Regia Marina was using. The Cavour class had a rather unique, and asymmetrical 13x12"/46 caliber guns, with two twin superfiring over triple turrets, and one triple amidhsips. The secondary battery consisted of 18x120mm/4.7"/50 cal Vickers/Armstrong guns. With a length of 176mm and a width of 28mm the class displaced 23k standard, and 25k fully loaded. Three ships were built; the Conte di Cavour commisioned in 1915, the Giulio Caesare commisioned in 1914, and the Leonardo Da Vinci completed in 1914. The Da Vinci suffered a magazine explosion in 1916 and sank.
Sources for these ships are rather scarce, so I did my best with the few images that are available to me.
Giulio Caesare as commisioned in 1914:
Conte di Cavour as commisioned in 1915:
Conte di Cavour as she appeared in the early 1920s: