How can you preview a Trendi outfit before purchase and how can you delete unwanted outfits?

I bought them all just to see what they were about, but decided that I did not like the whole Trendi thing, so I deleted all the outfits by using the multiselect option in my sim's inventory. You must highlight them in green, I don't think I got much for them was like a simoleon each or something, but at least I got rid of them instantly that way ;)