I have also been looking for plain nylon slips for the girls, so I headed to the girls clothing section after I had everything else I needed. I could not find the slips anywhere, so I finally asked an older Walmart Associate lady for help:
Me: Do you carry slips for little girls?
WA: (looking around) Um, I don't think...hmmm, maybe...
Me: I've seen them around Easter, but they always disappear. I wondered if maybe they get moved somewhere else the rest of the year?
WA: No, I think those are a seasonal item. I don't know why...
(We look at each other in silence for a moment.)
Me: Modesty is seasonal?
WA: (laughing) Well, Hannah Montana doesn't wear one, so why would anyone else?!?
And I hope that you are thinking, as MY daughters would be, "Hannah Who?"