A great site

Although many sites that sell women undergarments carry the same lines, BrasNYC.com has a unique product that allows you to convert any bra into a nursing bra.  For those nursing women you know how that really can help you out.

Convert a regular bra into a nursing bra

If you are looking to buy a nursing bra use this place, they convert all bras into nursing bras.  You just pick out which bra you want then you choose "convert to nursing bra" and viola!  You have that bra in a nursing bra!