Madam Malkin's Robes for All Occasions.

Though far from the only wizarding clothier around, Madam Malkin's seems to be the best, as it is the place where most Hogwarts students purchase their robes. Madam Malkin herself is a friendly, squat witch, though she seems a bit out of touch at times. Madam Malkin's is located next door to Flourish & Blotts, and in addition to selling Hogwarts school robes they also sell robes which are "spangled, self-ironing, beautifying, slimming, fattening, lengthening," and "temperature-adjusting" and they carry robes made by Whopperwear "for the outsize witch or wizard." A later advertisement states that every robe sold at the store is "self-ironing and repairing" as well.