Yes women are known to have 18"+ calves, much like their male counterparts 
You didn't get it, did you?
In terms of cut, and definition and shape, women in general kill men in calves. One of the reasons is due to walking in heels all the time. See, high reps and light weight---bodyweight, seem to be what really is needed to bring calf definition out, with some size. Which walking in heels does for women.
Dana on the hand has Wolfish calves...straight up and down.