Jean waist measurements vary considerably by brand.  There is no standard.  This is because designers have different visions for how their jeans should look and fit.  In other words, jeans are not true to size.  All the denim brands we’ve evaluated are between 1” and 3” over the labeled size.  For example: a jean with a 34 size label could measure anywhere from 35” to 37”.  To make sense of this, you’d need to understand the designer’s intentions.  Levi’s has…