Hi all,
I recently picked up a J. Ferrar suit coat at JCP (link below) and I am looking to pick up a vest to match it during the sale. I wear a 38R jacket, and I'm not sure if I should go with a small or medium vest. Does anyone have any experience with the vest and know how it fits? Thanks in advance!

Here is a link to the suit separates: http://www.jcpenney.com/men/jf-jferr...=ens6002460009