This statement is not based on science and is a superstition. I have not heard that buying clothes early can be unlucky for the child. Nowadays, it is advocated to prepare the child’s clothes in advance, as well as the waiting bag and other things, including the child’s bottles, pacifiers, diapers, etc. If you prepare too early, you can wait until after 8 months of pregnancy, then wash the clothes and expose them to the sun thoroughly, and you need to disinfect them. If you prepare too late there is a possibility that you will be rushed and may lose three things. For example, less things will bring some inconvenience at the time of the birth of the child, so early preparation is a help to children, adults, and does not appear to be unlucky. Especially if you are sure that the child is relatively healthy and can be delivered smoothly, you should prepare the clothes early.