Well, I for one have no problem with Stacey posting these kinds of pics.
I think it may have to do with the vibe of the photo. Kerstin always posts pics of her with her kids and rarely ever full body posed shots, so it doesn't ever come off as overtly sexy or arrogant. It's a safe way to show off her hot bod (which Kerstin obviously loves doing!)without getting hassled by women viewers or the QVC powers that be.
This solo shot of Stacey is pretty seductive. Again, I have no problem with it and hope she posts more because she is sexy and fit!
There is a very simple answer to solving the problem of these situations: Hosts should use their Facebook shopping channel pages for promoting shopping stuff and have personal pages or Instagram to post personal/sexy photos. Then they can do whatever they want on those pages, free of QVC/HSN/EVINE/JTV bosses! Let's be honest, most of the women on those channels are hired because of their beauty and sex appeal! And the big wigs know that us guys are watching to see the women!