Elizabeth Cole is Felicity's best friend, despite her Loyalist family leanings during the American Revolution. In spite of being quiet and shy, she is known to poke fun at her older sister Annabelle with Felicity – this stems from being teased at by Annabelle, who gave her younger sister the nickname "Bitsy". Elizabeth is also shown to be somewhat wealthier, as evidenced by having a larger home, a larger garden, and fancier clothing. The Elizabeth doll was introduced in August 2005 as the second Best Friend doll with a book written by author Valerie Tripp, and the character was prominently featured in Felicity: An American Girl Adventure. In the original Felicity book illustrations, Elizabeth had brown hair and eyes but the character's appearance was revised to have blue eyes and blonde hair with the release of the Felicity DVD and Elizabeth doll. Later editions of the Felicity books were re-illustrated to reflect these changes and edit Elizabeth's physical description.