The show is about growing up, in the beginning Lizzie and Miranda (played by: Hilary Duff, and Lalaine Vergara-Paras) buy their first bras. And towards the series ending they will be saying good bye to their Junior school. Matt, Lizzie's little bro, played by Jake Thomas is hilarious. He makes Lizzie's life seem worse than it really is. Kate Sanders, played by Ashley Briaullt, makes her school and sometimes personal life seem like hell.