Brittany Miller is the unofficial leader of the Chipettes. Although, she is prone to vanity, selfishness, materialism, and has a notoriously short fuse, she cares for her sisters deeply and often acts as their defender. Brittany shares personality traits with Alvin, she is dynamic, ambitious, fearless, competitive, and possesess the desire to have things her way.Brittany has auburn hair and blue eyes and her signature color is pink. Brittany and Alvin share a love-hate relationship. In fact, the rivalry between the two is obvious the minute they lay eyes on each other. But, secretly, she truely loves Alvin but, like him, she feels she is too cool to admit it.In the Squeakquel; most of her appearance has changed. She has a coat of brown fur (same color of hair), her hairstyle is somewhat similar to before and she has a visible tail. Her personality is greatly different to before; she possesses a calmer mind and acts much more mature.