In many dreams like this the message behind them is quite serious, but you also need to remember that sometimes the best thing for you to do is to simply have some fun with it. The dream interpretations of a person constantly putting on different clothes means that there is some kind of insincerity associated with who that person is as a person and that there might be something wrong at their core. Nobody wants to think of this and this why it becomes so difficult to come to terms with that.
However if this dream comes in the guise of a game and this is how you are thinking of it, then it makes coming to terms with it a lot easier because it is a form of play, it isn’t something you need to stress about at all, it is something that you are serious about and something that will make your life a lot easier. The ability to shift from one personality to another like a chameleon may seem distressing at first but it can be a good thing and in many cases is, so don’t worry too much about it, just get things done when they need to get done and you will thank yourself for it later.
If you have a dream in which you are wearing a dress suit it means that you need to think and be more responsible when you are making decisions. A dress suit means that you are a bit older or that even if you are not a bit older, you still need to be more responsible when you wear it because it assumes that you in an environment which requires you to be more mature. This is what it means when you wear a dress suit in your dreams.