To look thinner in jeans, go for the dark wash denim with plain pockets. A slight boot cut jean looks the very best if you want to look thinner. Skinny jeans have been really hot the last few years but the overall style requires that they be very tight, and often clothing that is form fitting and tight often reveals too much where tailored clothing and straight lines tend to make its wearer look thinner. Consider a boot leg cut, in a dark wash. A jean that has a bit more "give" stretch will fit better after it is washed several times. If you love flashy accessories, jeans will allow you to wear sequins, colorful heels, because they are so casual. A great pair of jeans are a must have in every gals wardrobe.