Grab a denim jacket from your local charity shop, make sure it's quite baggy, especially if you want the Bella Hadid/ Kendal Jenner to look. When you cut, make sure it's halfway down your stomach as opposed to just below your breasts (I did that once and I was just so embarrassed with my lack of patience and common sense.) 

As you can see from the pictures, I cut just above the 4th button, so feel to use your buttons as mark points. Once you've decided on the length, just cut away, have fun and I hope this helped. 

xxx