where can I buy girls/ women girls hair accessories please in shanghai?

You can find what you need at City God Temple area or Qipu Road area. There are many stores in these areas. And most of them have good quality and cheaper prices.

To City God Temple, you may take metro line 10 to Yuyuan Garden Station, Exit 2. To Qipu Road area, you may take metro line 10 or 12 to Tiantong Road Station, Exit 6. :)