Here is a wrap dress Tutorial I promised. The link to the dress I made for a swap:
http://www.craftster.org/forum/index.php?topic=213919.0.
I made the one in the tutorial over the course of a couple days but could easily be put together in a few hours. This one I messed up a little, but the only problem is the bodice back pieces. I cut them too short. Whoops!

Use your actual bust and waist measure adding
no ease.
You can make the back with nice effects, like shells, zig zags, things like that. But if at any time you have questions let me know.
But I fixed the pattern pieces accordingly. You can use this pattern as a basis for any design. (By doing as I did you can create a jumper type bodice, by using your chest measure as well as the bust measure.) For the straps: I would suggest making them about 20" long and altering to your size as I had to also play around until I got them just right.
The pattern pieces are as follows:

Page 1:

Page 2:

Page 3:
Sewing together: Place the two bodice pieces ( front facing and two back pieces) rt. sides together.
sandwiching the ties and straps between the layers. Sew 5/8”. Trim corners and turn
rt. sides out. Now the straps and ties are between two layers
creating a nice clean edge. Press.
Now line up the skirt to the bodice piece. Sew 5/8”.
Now it is ready to wear.
I hope everything is easy to follow, if you have a problem PM or post here and I'll answer all questions.
Thanx,Pamela.