Which of the following describes a high-end, made-to-order fashion item?

The term that describes a high-end, made-to-order fashion item is couture. Couture refers specifically to the creation of exclusive, custom-fitted garments, often made from high-quality fabrics and involving intricate designs and craftsmanship. This process caters to an individual's measurements and style preferences, making it a luxurious and personalized experience.

In contrast, ready-to-wear fashion comprises garments produced in standard sizes to be sold in stores, aiming for a broader market appeal without the personalized aspect of couture. A designer label can include both couture and ready-to-wear items but does not specifically denote the made-to-order nature exclusive to couture. Fast fashion refers to the rapid production of inexpensive clothing in response to the latest trends, resulting in lower quality and less exclusivity. This further emphasizes why couture is distinct in its high-end, bespoke approach.