The novel begins with Grace Kelly in Cannes, being pursued by James, a British photographer. She ducks into a perfume boutique where Sophie gives her refuge. Over the next 30 years, James and Sophie form a friendship and mutual admiration, though life sometimes pulls them in opposite directions. Meanwhile, Grace meets and becomes engaged to Prince Rainier, returning to Monaco for the wedding. Grace has never forgotten Sophie and orders the perfume for her wedding from the boutique. The publicity causes business to pick up.
In Meet Me in Monaco: A Novel of Grace Kelly's Royal Wedding (2019), Hazel Gaynor and Heather Webb have written an amusing and delightful novel with a light romance amidst the wedding of the century.