Todays casual church outfit I did my true size in the pants and sandals, both fit comfortably and are from Amazon Amazon I sized down one to a medium in the vest. And it fits perfectly! If you are very large chested and want it to button, I suggest staying true to though. Bandanna on my bag is not linked, but it was only $.99 at Hobby lobby LTKFindsUnder100 LTKFindsUnder50 LTKStyleTip