I came across this blog (From and Igloo) the other day, and I knew I had to make that dress for K. Luckily I had also found some fabric that I loved. Here is my end result.
Here is a picture of the back. You can see that the dress ties through a button hole in the back of the dress, so easy and so cute. The back is also made using a technique called shirring. There are lots of tutorials on shirring but this one is the one I initially used. It is just basically using elastic thread in the bobbin of your machine and sewing. It is sooo cool. The fabric just gathers as you sew. (As a side note check out this blog if you have a Brother machine and have struggled shirring, this saved me from throwing my machine out the window.)
Have fun!