The sad thing is, I believe it was photographed on the model when she was wearing the beige dress that got cut.
But, it's still a nice thing you can make that would look great with the pink dress, which is a 1913-14 style. The green dress is more 1919-20 and I don't the later teen's style suits that kind of jewelry as well.
The full tutorial used to be on the Simplicity website, but now is here! Just on a different blog post.
This link will take you there.
Next blog on this pattern I will show how I sewed these dresses. And after that I will show you how to adapt the pattern pieces in the envelope to make the beige dress.