Hair Piece????

I had a trial with my hairstylist and she indicated that I don't have that much hair to do updos. So she told me to buy a hair piece to fill in. Has anyone bought one? Were is a good place for me to go? What is the difference between synthetic and human hair? Does it matter?

Thanks for your help. I don't know much about this.

My SIL wears real hair pieces all the time...they look so natural. She bought one to wear for my wedding..it's made for an updo. I know when you think hair piece it makes it seem like a real bad tupay(sp??). They really look great and natural. The place she goes to makes the hair the color of her natural color and adds highlights or whatever she wants to them. FM me if you want more specific info.