The official Aosta website titles him, and I quote, "S.A.R il Principe Aimone di Savoia".
To refer to Aimone as "Crown Prince of Italy" is as absurd as the notion of Amedeo, or Vittorio Emanuele, calling himself "King of Italy".
As the discussion is veering into the fanciful as well as duplicating topics being discussed in the new Prince Aimone and Princess Olga thread in the Italian subforum, this thread is now closed.