Yes, I do think that Kendall Jenner is too young to dress how she does. The fact that she has such a huge following, if anything, escalates the problem. Of course, most teenagers go through phases of trying to push the boundaries and shock those around them. She is simply surrounded by even more scandalous behavior and dress then most.
Yes, Kendall doesn't dress age appropriately, but lets remember what she is now doing to earn money. She is a model, by trade and as a model she tends to look more sophisticated then someone else would her age. Do I approve, not really, but I know that is the industry of the a model they tend to look older then they actually are.
Kendall Jenner is not too young to dress how she does. She is an adult, and should be treated as one, even though she use to be a child in the public eye. As an adult, she has the right to dress in whatever way she wants, and should not be negatively judged for her style of choice.
Kendall Jenner is legally an adult. She is required to make her own decisions, and dress her body the way she chooses. If she wants to wear tight revealing clothing, that's her prerogative, and there's nothing anyone can do to change that. It is Kendall's right to express herself in whichever way she pleases.