Roblox is a popular online game platform that allows users to create and play games, as well as customise their avatars with a range of clothing, items and accessories. To purchase new clothes and items in the game, you need to have Robux, the virtual currency of Roblox. Robux can be purchased with real money from the Roblox website or from the Roblox mobile app, or it can be earned by completing certain tasks. Once you have enough Robux, you can visit the Roblox Catalog and browse through the available clothing items, accessories and other items, and purchase them with Robux.