After many years of absolute frustration that all sports gear is designed for girls taller than 5'4 I am thrilled to find a company in the USA who are now doing petite cycling gear:
http://www.teamestrogen.com/petite/c0-atspecialty_05.html
I've not ordered anything (and in fact there was more choice when I first found this about a month ago) but given my frustration I thought that there must be some other girls out there with the same problems.
Happy shopping!