I made this pinafore to go over the Maya blouse from the same issue. http://www.craftster.org/forum/index.php?topic=248548.0 I think the original pattern may have called for actual piping. I added just the fabric strips without cording into the seams and ironed them flat. I like the extra contrast of a wider strip; do you?
I love making things that layer because I'm such a slow sewer that outfits have to get a lot of extra mileage. Hopefully this can also be worn as a top by itself. I'm still pregnant with the intended recipient so I don't have a way to try it on an actual baby.
Now to find the right fabric for matching pants... what would you think about pants out of the same navy fabric? Or is that too much?