A women's set typically consists of a matching two-piece outfit, and the combination you described—a sexy crop halter top paired with an asymmetric hem skirt—sounds stylish and chic. Here's a brief description:

Crop Halter Top: This top is designed to expose the midriff, featuring a halter neckline that ties around the neck, leaving the shoulders and upper back bare. The crop length typically ends above the navel, accentuating the waistline and creating a flattering silhouette.

Asymmetric Hem Skirt: The skirt in this set has an asymmetric hemline, meaning it is cut in a way that creates an uneven or diagonal hemline. This design element adds visual interest and can create a dynamic and fashionable look. The skirt may be fitted or flowy, depending on the desired style, and it complements the crop halter top perfectly.

Together, these pieces create a trendy and coordinated outfit that can be dressed up for a night out or dressed down for a casual yet stylish daytime look.