Yeah, it depends on whether you had actual breast tissue development or not. I did, a bit (a pediatrician diagnosed it) and it definitely did give my breasts a head start; I had visible tiny boobs in the first week of HRT when the breast buds made everything perk up and stick out again.
And I did end up a C-cup at four months, so I'm guessing it helped with speed of development, if not necessarily final size (topping out around a 38DD now).