I think I'll find a site that has a 38 and give that a try. I agree, Maya -- it seems ridiculous to order a 39 when a 38 is usually too big (and the shoes reviewed on Piperlime were not the Juliettes but the similar one with the higher heel and no peep toe, so maybe there's a difference.)
Wilson, you are so right about those Euro sizes -- a 38 is supposed to fit a "7 or 7.5" (HOW could it fit both?) but 38s are almost always too big for me. In fact, let me know if you would like my gray Fly London pumps. I love them but they are just too big. I'd be happy to send them to you -- since Taylor sent me her shoes, I feel I owe the universe a little good shoe karma. They're the ones pictured on the far right in this blog post.
Angie -- I will gladly be the sample tester! Stay tuned...