I hit the 3 month mark myself in 6 days.
I'm surprised at how much has changed, in general. As far as hair goes though, my facial hair has thinned out quite a lot. I'm almost back to peach fuzz on my upper lip, somehow. Same for everything but my neck, pretty much. Before HRT I thought I'd be able to do laser treatments, but now all my facial hair is getting too light.
Chest hair seemed like it'd be resistant to change at first, but now it's thinned out quite a lot and is also growing much more slowly. At first, there'd be a ton of growth the next day. Now it's several days, between chest shaves, instead of every day. Getting closer to one shave a week.
Arm and leg hair has thinned out as well. All body hair is growing more slowly, as well. Most of the areas are not gone completely, they have just thinned out a good deal and slowed in growth, as well as lightening in shade. I'm hopeful that most of my body hair might just go away, or at least turn platinum blonde or clear, if my current rate of hair feminization continues.
I feel like I'm having good luck with hair, mainly because I only have been growing chest and facial hair that required regular shaving for 1.5-3 years before I started HRT.