- "Cassidy looks so much her brothers."
- —People on Cassidy's appearance
Cassidy Prince looks like her two brothers; Severus and Lucius; with the black hair from the Prince and the blue-pale from the Malfoy side. Cassidy stands at 5'4", being short next to her brothers. She has an slim body shape, with an heart-shaped face with blue eyes and long wavy black hair that reaches to her middle back, and having the pale complexon.