The phrase identifies a specific category of clothing itema dress with a neckline that exposes the shouldersavailable for purchase at a particular retail chain. This refers to garments designed to sit below the shoulders, leaving them bare, and offered by a large, well-known retailer, likely within their apparel section.
The combination of garment style and retailer implies accessibility and affordability. The style has cycled through periods of high fashion prominence, and its availability at a mass-market retailer suggests wide appeal and a relatively lower price point than might be found at specialty boutiques or designer stores. This reflects trends in the fashion industry, where styles popular with high-end designers eventually become accessible to a broader consumer base through mass production and distribution.