Jean vests are very on trend this fall. But, don't spend a lot of money on one. Jean jackets are a thrift store staple....whether vintage or new. Look for a jacket with a nice wash and that fits your shoulders well. I found this light wash J Crew jacket for $9.95.
Simply cut a hold in the middle of the sleeve to start cutting along the shoulder seam. This couldn't be any easier because you are following the established seam line. Make sure to use scissors for the most precise cut.
The vest can be worn with almost any outfit you already have and adds a non-chalant factor.