Style Savvy is played by holding the DS sideways, and the game utilizes the clock and date settings on the system. There are 8 locations where the player can buy clothes, accessories, change hair styles, change outfits, and work on their shop by managing items, making ads, and more. In the contest they can compete and stand a chance to win a rare item.
Using the DS Wireless play, players can also visit other players' shops, trade flyers after the Ads and Flyers option is unlocked, or take part in the contest with up to 3 players. The Nintendo Wi-Fi Connection allow players to open their own shop and let other people visit it. They can even download items that are not available during gameplay.
Source: Wikipedia, "[en.wikipedia.org/wiki/Style_Savvy Style Savvy]", available under the CC-BY-SA License.