Well, I'm sure some Earthlings will just buy whatever sort of fits and settle for that. You never liked wearing super baggy things and you've always had trouble finding stuff that fits properly around your shoulders and arms.

[Hence going sleeveless so often.]

Measuring means having stuff that fits exactly how it's supposed to, and if I write it all down, that means it won't take nearly as long next time I make you something.

[She takes some sewing chalk to make markings on the back of the sweater where she's going to take it in, and pins it accordingly.]