Hi there, According to my dh size can be different from one manufactuer to another. I am 5'2 and went with the Specialized Dolce Comp. Because Specialized sizing runs a bit different I went with a 51 (bar going across) and 52 (bar up and down). The stretch is perfect and I do not have my seat all the way down. There is a good amount of stem showing. My other option would have been the Allez Comp and I would have fit a 50 in that one, but the finger stretch to the brakes was much more comfortable on the Dolce.

I noticed many of you mention low cm's but I guess with a Specialized you might be able to boost up those numbers.