You do not need to wear expensive designer clothes and accessories in order to dress so that you look wealthy. In fact, you do not need to dress in the same manner really wealthy people usually do. If you want to look as though you are rich, you need to dress in a manner people imagine wealthy people, and this is not as difficult as you may think. The trick to dressing in a wealthy manner is to be able to recognize a bad clothing choice from a good one. You must be able to choose the clothes that will work for you.
The truth is that many millionaires wear modest clothing, some of which has seen better days. Rich people prefer comfortable clothes, regardless of brand or style, when they relax. They save their finery for special occasions, and during the average day are likely to be seen sporting comfortable, vintage clothing they do not want to get rid of.
To dress as though you are rich it is best not to follow their example. People imagine rich folks as impeccably dressed in the latest fashions, and always looking well groomed and smart. The idea that wealthy people look this way comes from the way celebrities are portrayed in the media, and this type of appearance is the one you probably have in mind. But you do not really have to emulate them. Dressing up to kill is something that not only rich people have monopoly on. You can have your own style that still speaks of wealth and fashion. You just have to pay attention to the details that completes your whole look.