A HAPPY MARILYN is a lifestyle shopping app developed by MIN K.K. that provides plus-size fashion for women. The app aims to cater to the fashion needs of its customers by offering a wide range of sizes from M to 10L. It also provides a variety of clothing combinations and styling options for its users.

The app's features include a simple search option that allows users to search for products by category, keywords, or favorites. Users can also access their account information, order history, and make changes to their membership through the app's My Page feature. Additionally, the app offers push notifications to keep users updated on the latest information and exclusive app-only promotions.

It is important to note that the app requires a stable network connection to function properly and is recommended for use on Android 8.0 or higher. The app also requests access to user storage to prevent coupon misuse and store necessary information for future use.

Overall, A HAPPY MARILYN app is a useful tool for plus-size women looking for trendy and fashionable clothing options.