My friend had particularly mentioned a special episode on "Shapewear". Curious, I gave it a look. The hosts tastefully address various shapewear options displayed in ensembles on mannequins. I'll leave it to you to watch the video for the details.
What struck me really, was the incredible repackaging of these things that look like running tops and bike shorts just slimmed down a bit that function like a corset or girdle but using 21st century materials. No whale bone, just spandex.