Style Savvy puts the player in the shoes of the owner of a clothing boutique. It's the player's job to purchase inventory to stock the store, monitor prices and make the customers happy. There are 16 in-game designer labels with over 10,000 items. Local wireless and Wi-Fi allows the player to visit one of their friend's stores, and allows up to four players to engage in fashion contests.
During gameplay, the Nintendo DS system is held on its side, and the game utilizes the system's date and time features.