Where can I get the most realistic fake/silk flowers?

I live in Maryland and am looking for a supplier of high quality "silk" flowers. They must look as real as possible and have a nice hand. I sell upscale hair flowers and mini hats for weddings and the quality of flower of that I'm able to find around here is horrible. Michael's, A C Moore, Joanne Fabrics..they quality just isn't there. Does anyone know of a really good quality supplier? Any help would be appreciated.