To Alter or Not?

I bought this lace vest on clearance last summer because I had been looking to add to the lace pieces in my closet.  It is a tank top, and the arm holes are cut a little funny - they are a lot bigger than usual.  I've contemplated cutting the tank up the middle and hemming it to be a vest, but I thought I would wear it as-is a couple of times first.  I still haven't made up my mind...

White Tank:  Target
Lace Tank:  Gardner Village
Cardi:  Target
Pants:  The Limited
Necklace:  Blue Boutique
Shoes:  Don't remember and you can't see anyway!