Convertible dresses are such a good investment. You're essentially getting multiple dresses for the price of one! Now if that's not smart shopping, I don't know what is. Even your partner who's slightly concerned about your spending habits will have to (grudgingly)admit that it is a good buy.
There are roughly 10 ways (if you're really creative, you can get way more than that) of wearing the dress; one-strapped, off-shouldered, strapless, halter etc. It all depends on how you twist, knot and tie the two long straps.
My version is ruched and is made from a lovely matte-jersey material. I wore it for the first time last night to a friend's birthday party and had fun playing with the straps. I finally settled for this and pinned the straps in place with this pretty peacock brooch with rhinestones. I got this when I went back to Malaysia and stuffed it amongst my many accessories when I got back which explains why the peacock feather looks so weird. Oops...
P/S: I'm sorry about the quality of the first two pics. I was trying to find a camera setting that would best capture the ruche detail on my dress. I should have kept trying, but it was really late and I was really tired, so I didn't feel like standing there all night. I need a new camera.