I went through my old slides, and soon realized that I had so many that I wanted to use, that I could easily stop doing other kinds of alterations altogether, and start just adding slides to things.
To resist this temptation I decided to glut myself on slide additions for this one skirt. I sewed as many as I could fit to the underside of one of the pockets. (To the left are photos of what the skirt looked like, turned inside-out, after I added the slides, with the pocket pinned back)
When I returned it, the salesperson who handled the transaction was very concerned about my experience with it. It went something like:
Salesperson: Why are you returning this?
Me: Oh, uh, it didn't fit.
Salesperson: What was wrong with it?
Me: It wasn't the right size. I didn't try it on before buying it.
Salesperson: Oh, I'm just asking because I had the same problem with this skirt. It looked really cute, but didn't fit like the tan one. Did you get the tan one?
Salesperson: I had the tan one, but it was sized differently, and this one bunched a bit in here.
Me: Oh, that's weird.
Salesperson (looking at the receipt): Oh and you just got it!
And so on. Apparently my attempts at showing genuine interest in the fit of the skirt were unconvincing, because I looked back from outside the store as I left, and saw her hold the skirt up to the light for scrutiny. She didn't turn it inside out and flip the pockets, though.