Barb...are you saying I have chubby thighs??? LOL.

On a serious note, I think Barb just gave you about the best answer you can get. She and I have had some conversations about this and examined kilts that she has made vs. one that I made. I'm a strong proponent for the "curved A" like Barb recommends...I feel that the straight A shape always makes the bottom of the apron look weird during wear. If you're going with straight and you're thin, you could probably get away with 1" or so...otherwise curve it so that it hits the selvedge at a 90 degree angle.