They worked for me. I took them for about 6-8 months prior to HRT.
Saw Palmetto, Red Clover extract + lotion, (unnameable supplement), "extra strength" menopause supplement = early breast development (breast buds, tissue under/near the armpit, slight but noticable increase in breast size and sensitivity)
Once I started HRT, I stopped all herbals. After one year, I'm just a skosh under a "B" cup.
Some get effects, some don't. I have no idea why, but I had the money to burn (I think it was about $25-$30 USD/month) so I thought, "What the heck...no harm in trying."