mature bridal wear for older women over 40/50

I'm currently EBF my 1 month old son, my second child. He was 9 lb 13 oz at birth and is currently 14 lbs. My question is can you overfeed a newborn? He nurses every hour, sometimes to eat sometimes to soothe. My milk looks like heavy cream and I'm afraid he's getting too much. I have over active letdown and we are block feeding since he spits up a lot as a result. My first son was big baby too, but not like this. TIA mature bridal wear for older women over 40/50