I cropped my 3b hair very short and it got MORE curly -- nothing like Halle Berry. If you have that image in your mind, I would be careful because it's hard to know exactly what your hair will do. While some curlies may not curl so much, there are some of us who get EXTRA curly very short... or I did at least.

And the growing out process was PAINFUL. I wore hats for a year. Not to discourage you at all, but just think long and hard about it.
3B with some 3a. Fell off but am now back on the CG bandwagon and looking for my HG products.