Lydia Bennet
Pride and Prejudice Jane Austen
Lydia is the most memorable of the Bennet sisters, for her being the youngest (only 15 during the story) and the wildest. She runs around with the soldiers, flirts with them all, and then runs off with Mr. Wickham. She is happy tormenting her sisters and boasting about her conquests to them. Her older sister Kitty follows her around.

Lizzie, Lydia Bennet, Kitty and Jane in the A&E Miniseries

Lydia Bennet in the BBC Miniseries
Pride and Prejudice