I know Scott makes some kids' bike things. Lemme go link hunting for a sec... Voila! I like the idea about looking into XS women's sizes - some brands really do make tiny stuff (plus the really small sizes always seem to be well represented on the sale racks ). And where's MP? She has a kid who rides. Maybe you could send her (maillotpois) a private message and ask her what stuff she's found for her daughter..?