Sophie Fairfax is a French girl who lives with her grandfather (Edouard des Roches, in the carriage house where he is a chauffeur) since her parents are divorced. She is pretty and fashionable and gets along well with boys. She and Megan Wong start off on the wrong foot, which leads to a prank by the whole Mother-Daughter Book Club on national television.
She is a vegetarian.
She is first introduced in Wish You Were Eyre, and remains as a side character in the following book. Her grandfather marries Megan's grandmother (Gigi) so they are cousins. Annabelle Fairfax and the Berkeley boys are also cousins.
Sophie has "lustrous" curly dark hair, a heart-shaped face, green eyes, thick lashes, and a very cute French accent.