Since Kendall Jenner is a tall girl, vertical stripes help her create attention towards her height. The thin weight of the stripes help her make her look taller than she might be but also add a chic look to the outfit altogether.
I still have my "Little Girl" self with me all the time! The good news is I also have my Grown-Up "Smart Woman" with me too! I found my "Prince Charming" in my and I'm the "Queen of My World"- Just like this picture!