Everyone, even those who are very skinny, have certain body parts they are not very fond of and that they want to hide. One of the most important things you must know when it comes to clothing is that dark colors hide while light colors accentuate. This means that if you want to show off your upper body while hiding the lower part you could wear black trousers with a white top. Also, keep in mind that large patterns make everyone look bigger while small patterns are known for making people look thinner.
