Three decades and hundreds of transfeminine breast augmentations show rare regret and trends toward larger implants

Our anatomical baseline is very different from that of adult cis women, with a recent study finding that 7 in 10 trans women developed breasts of less than an A-cup after three years of feminizing hormone therapy, and only 58% stating that they were satisfied with their breast size.
 

Great blog post, from Zinnia Jones, which includes links to various studies done recently.  If you're thinking about BA, you'll want to read this one.