Purchased size 9.5 C Child - it was too small for my daughter's 16.6 cm long foot, however, contrary to the sizing info. The exchange service was friendly and prompt. We ended up getting a size 10.5 C and the shoes are great. We will be coming back!
My eight year old has been wearing these shoes in ever increasing sizes since the age of 4. They are extremely well made, fit her very well (she has particularly narrow feet which can get swamped in some other styles) and look smart. I would recommend them highly.