I'm afraid I didn't measure before I started HRT.
Week 1 : Bust 40[A], waist 38", hips 40", upper thigh 25"
1 year : Bust 40[D], waist 37", hips 41", upper thigh 27"
4 years : Bust 38[DDD], waist 36", hips 44", upper thigh 29"
Total change : Bust -2"/5 cup sizes, waist -2", hips +4", thigh +4". And I think I gained about 10-20 lbs over that time too.
My one disappointment is that I haven't ended up more hourglass.