What's A Slip?

How times have changed! Rummaging through her dress-up box, Josie pulled out this beauty and wanted to know what it was for.

It's a slip, rather, a half slip, I told her. "But what's it for?" she persisted.
I told her that ladies used to wear them under their skirts. And that I had this particular slip when Grumpy and I got married 62 years ago.  (Back in the dark ages of panty girdles and stockings, but I didn't attempt to explain these artifacts to her.)
She is fortunate to grow up wearing comfortable knit shorts, t-shirts, dresses, and leggings. (Though her Barbies have to suffer some itchy and constricting garments,)
She did find a good use for my ancient half slip though.

Good old Bailey.

"Can I take it off now?"