Wendy Testaburger usually wears a pink beret.
The beret is Wendy’s most recognizable clothing detail in South Park. Her standard winter outfit also includes a light-purple jacket, yellow pants and dark blue gloves or mittens. Together, these colors make her easy to distinguish from the other South Park Elementary students.
Wendy is the show’s principal female student and is commonly portrayed as intelligent, mature and outspoken. Her clothing design supports that instantly recognizable silhouette: the pink beret frames her long black hair and remains in place in most scenes.
The word “usually” matters because South Park sometimes changes its characters’ clothes for costumes, performances or special storylines. Wendy is occasionally shown without her hat, and alternate versions of the character can wear different headgear. Those exceptions do not change the standard answer. Red, green and blue may appear in special outfits, but pink is the canonical color of Wendy’s familiar beret.