I have at least three wrap dresses in my closet (all from Banana Republic) and I just love them. They are the perfect dress for work or play and pretty much work with any season. My "collection" started with a simple black wrap dress from Banana Republic. I've had this dress for years and still looks good and works for most occasions. I wish I had it in a petite because it's a little long for me. Next came this orange number a couple years ago. The material is a little heavier so it really only works in the fall and winter.
You can't tell in the picture but it's got a ruffle detail around the trim which I love. This dress has an enormous tie and I'm taking it to the tailor to get shortened. I wear this dress all the time in the fall/winter.
The latest in my collection is this purple number. Picture quality sucks but the dress is available from Banana Right now. This is a faux wrap (which I prefer) with a three quarter length sleeve. I got a petite and the length/fit is perfect. Currently it is available in black, coal, teal and of course purple.