Unfortunately, I misunderstood the sizing issues. It turns out that the knot pattern runs small but the peasant pattern runs BIG. This looks so lovely on the floor, but it hangs like a sack on my girl. The great thing is that I love it and she will grow. :D
Just tonight, I started sewing Butterick 5456 just as I had planned in my clouds and dots. I cut out an 8 and was kind-of concerned that there wasn't a 6. Turns out there was no need for concern though, because this 8 is a smidge smaller than I'd like! Here's one time where cutting out what I thought was my size has bitten me in the butt because I have no other sizes available to me now so I can't size up. I will make a note to add 1" to the center front next time.
I sewed for my younger girl too. These fabrics have been cut out since last summer, which means I was a little concerned they might not make the right size/length dress for this coming summer. Thankfully, my short one hasn't shot up in the last few months and the dress was pretty much perfect!