Madam Malkin's Robes for All Occasions

Madam Malkin's Robes for All Occasions (sometimes simply referred to as Madam Malkin's) is a shop in Diagon Alley. Students get their Hogwarts school uniforms there, and also dress robes, travelling cloaks, and the like.

The shop was first seen in Harry Potter and the Philosopher's Stone and played some importance in the 2nd to most recent book, Harry Potter and the Half-Blood Prince. Both times, Harry encounters Draco Malfoy in the shop. In the first book they have a brief conversation, and the scene is important because it introduces Malfoy. In the sixth book, Harry and Malfoy openly insult each other and almost start a fight. In the same scene, Draco refuses to lift up the sleeve of his dress robes so that Madam Malkin can hem it. This leads Harry to believe that Malfoy has been branded with the Dark Mark.