No problem! Just cancel the order you've just placed. Alternatively, if you wish to order something else or the same product in a different size, you would need to place a new order for that product in your preferred size on the app. In case you receive the order and have a change of mind, you may choose to opt for a different colour/product or the same product in a different size. To do so, do follow the steps to return/exchange your product. 

NOTE: Opt to 'return' for a different colour/product and opt to 'exchange' to receive a different size.