Many find the charm of an English accent irresistible, especially American girls, as suggested by the quote from Stephanie Perkins' book "Anna and the French Kiss." The author implies that the accent has a captivating quality that can easily attract attention and admiration.
The quote highlights the universal appeal of certain accents, with the English one specifically standing out among others. It suggests that the allure of such accents can significantly enhance the romantic and charming aspects of a character or a person, making them more intriguing and memorable.