Mia and Michael are finally an item, but her totally out-of-control Grandmere seems to have other plans . . . Just before the happy couple's first hot date, an unmissable royal engagement turns up. Could it be that Michael doesn't measure up – and that (please not!) Grandmere's got someone else in mind for Princess Amelia Mignonette Grimaldi Thermopolis Renaldo?

Previously published as Mia Goes Fourth, Royally Obsessed is the fourth novel in the hilarious, bestselling The Princess Diaries series by Meg Cabot – with a gorgeous cover to celebrate the series's fifteenth anniversary.