This one is an oldy but goody. It is Accidentally on Purpose Drop Stitch Vest from the Stitch n Bitch Nation which sells for cheap on Amazon right now. The photo above is of Leah before her blogging career started. I have been trolling Ravelry so this is what I get when I really want a vest. I would like to do Eunny's vest but these are other options.
This is of course the Back-to-School U-Neck Vest from Fitted Knits. I think this looks amazing on just about anyone.
This next one I think is hot it is called Green Day. The pattern is in another language but we might be able to get the designer to help us. Unfortunately Google translator failed me on this one. This is from Tikru who blogs at Made by Myself.
The last is the Scoop Neck Vest from Blue Sky Alpaca. This is a great example from Cathi at In the Pink. She blogged about the sweater here.
If I get around to it, I will post some cardis that have caught my eye.