Here's a closeup of the bodice with the brown piping:
The trim on Kate's dress is vintage (except for the bottom lace), from my grandmother.
If you click through and look at the largest size photo of the back of the blue ric rac package, you can read the Wright's "Does your child sew?" offer on the package. ;-) The hem is lace from MJ Trim, and is a very pale blue despite look white below.