What is the collective noun for wardrobe?

There isn't a widely accepted collective noun specifically for a wardrobe.

However, you could use some of these options depending on the context:

* A collection of: "She has a collection of vintage garments in her wardrobe."

* A rack of: "He hung his suits on a rack of clothes in his wardrobe."

* An array of: "The wardrobe held an array of colorful dresses."

* A selection of: "The wardrobe offered a selection of stylish outfits."

Ultimately, the best choice depends on the specific situation and the type of clothing you are referring to.