In the UK, knickers just means panties, but here in the US, it means so much more. It means… well, look at what Cindy is wearing over actual panties and you’ll see some knickers. You might also call them pantalones… maybe even bloomers (although I suspect those are longer).
Whatever they are, they are super cute. Cindy suggested them over the panties, and I loved the look. Pair with a vintage-y bra and hotness, and you have an irresistible set.