I agree it can be exciting yet makes it makes me nervous buying female underwear and jeans myself, some assistants always female seam to love making a comment, such as are you sure they will fit you, or you will look nice in those. Little do they know i hope i do!
The biggest kink is when i am stood in tight jeans having bought them from that store, then they must know as they load the racks as well as serving on.
But in the main i prefer my cuckoldress to buy them for me, it conformation she likes and wants me to wear female clothing, even openly around the house, which i still find rather strange that she doesnt bother or comment.