Department Store dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Ariadne Green

Shopping for clothing in a department store reflects shopping for a new attitude or image of yourself Shopping at Saks Fifth Avenue, for instance, might represent adopting upper-class values and attitudes about style and image. Trying on clothes at Macy’s may represent putting on the attitudes of the middle class. And going through the racks at Wal- Mart reflects concerns about getting the best bargain for your money, with little regard for your image.
Source: Ariadne's Book of Dream Author: Ariadne Green

Interpretation 2 — Tyler Wolfe

Symbolic of life’s choices
Source: Christian Dream Symbols Author: Tyler Wolfe