I still have lots of Kim & Co including vest tops, some of them nearly as old as my kids (pushing 30) a few years ago I sold some Kim items but later regretted parting with some bits. I sold off some long skirts in the original slinky fabric because I mostly wear trousers after I quit work; so the rest I have kept (stored in the loft with my other hoards) mainly because she doesn't make anything in that viscose slinky - mainly polyester these days.
Back to kim vests. I have some which I wear every week that wash well and never fade. I can sleep in the slinky fabric as I don't find it sweaty, so any tops with cat-pulls, I sleep in.
I think QVC has sidelined Kim in favour of Marla or Ruth in recent years.