While there is much speculation surrounding whether Camilla will indeed receive the title of queen, there are also questions surrounding what titles Kate will be awarded. Titles are not automatically transmitted; many of them, Independence report, must be specified by the sovereign.
In Season 3 of The Crown, we saw Prince Charles being crowned Prince of Wales. That’s because heirs don’t seem to automatically become princes or princesses of Wales. Queen Elizabeth was actually Princess of York before taking the throne. Whether Prince William becomes Prince of Wales will depend on what Charles decides, according to show.
For Kate Middleton, that means whether she will be called the Princess of Wales is up to her father-in-law. But that doesn’t mean there aren’t other titles that Kate will automatically be awarded. William will inherit the title of Duke of Cornwall, the Express reports, which will make Kate the Duchess of Cornwall. William will also achieve titles in Scotland and Northern Ireland – Duke of Rothesay and Earl of Carrick – which Kate will also achieve.
https://www.thelist.com/752757/all-the-titles-kate-middleton-will-likely-inherit-when-charles-becomes-king/ All Kate Middleton titles are likely to be inherited when Charles becomes king