A Muslims dress is really driven out of simple modesty and a desire to not draw individual attention in any way. Muslims generally do not resent the restrictions placed on their dress by their religion and most regard it as a proud statement of their faith.
For men: The minimum amount to be covered is the body between the navel and the knee. It should be noted, though, that a bare chest would be frowned upon in situations where it draws attention
For women: In general, standards of modesty call for a woman to cover her body, particularly her chest. The Quran calls for women to "draw their head-coverings over their chests" (24:30-31), and the Prophet Muhammad instructed that women should cover their bodies except for their face and hands. Most Muslims interpret this to require head coverings for women, although some Muslim women, especially those of more conservative branches of Islam, cover the entire body, including the face and/or hands, with a full body chador.
Islam also guides that clothing must be loose enough so as not to outline or distinguish the shape of the body. Skin-tight, body-hugging clothes are discouraged for both men and women. When in public, some women wear a light cloak over their personal clothing as a convenient way to hide the curves of the body. In many predominantly Muslim countries, men's traditional dress is somewhat like a loose robe, covering the body from the neck to the ankles.
The Prophet Muhammad once warned that in later generations, there would be people "who are dressed yet naked." See-through clothing is not modest, for either men or women. The clothing must be thick enough so that the colour of the skin it covers is not visible, nor the shape of the body underneath.
We hope this helps in understanding a little about how we should dress as Muslims