There is no one-size-fits-all answer to this question, as the best type of jeans for a skinny girl will vary depending on her body type, height, and lifestyle. That being said, some of the most popular types of jeans that are perfect for skinny girls include skinny jeans, straight leg jeans, and bootcut jeans. When choosing jeans for a skinny girl, it is important to keep in mind her size, shape, and figure. For example, if a skinny girl has a smaller waist than her hips, she should choose a straight leg or bootcut style of jeans that fit snugly at the waist. If a skinny girl has larger hips than her waist, she should choose a pair of jeans with a slightly wider leg opening (so they don't show off her waist as much).