I got cute junior bridesmaid dresses for an 8 and 10 year old at Davies bridal. They really look cute, have a lot of junior styles, and are very inexpensive. Not sure whether they have your color though (and you may have already checked) but it is worth a look. You can see all the styles and colors online.
The Barefoot Bride. Best place in town! Check out their Facebook page. Www. Facebook.com/barefootbrideboutique
I shopped etsy.com for a flower girl dress. You can always find something there.
Click on each tool to see a sample.