I've posted this before but it's still pertinent to the topic.
Yes.
I had stick-straight hair all my life. So straight, in fact, that my friends were convinced I 'straightened' it artificially.
My hair is now curly and full of volume, almost like a white dude fro. It has also slightly thickened in texture and it no longer gets oily right away (I suspect because curly hair takes longer to appear oily). For reference, I've been on T for 1 year and 4 months.