I actually had just this experience last week when I went shopping for jeans. Instead of asking me that dreaded first question (to which my response is invariably no), she simply pointed me to men's jeans, asked me my size, asked what kind of style I was looking for (X or Y), and picked out a few pairs for me to try on.

It was great. From a business point of view, I didn't spend any more than I'd intended, but I finished quicker and left with a positive impression.