Santa needs a helper

Okay, so my 4 year old is really getting into barbies. She has several dolls but I cannot find clothes anywhere to dress them. In my girlhood days you could buy jut the outfits but I'm not finding any.

So I am asking for help. If any of you know where I can get some Barbie clothes I would really appreciate it. Santa is out of ideas. I thought that if any of you have girls that have outgrown the Barbie phase that I can buy them from them. Anyway, I don't know where else to look. Apparently Barbie has spent all her money on her cell phone and pink car and didn't save any for her wardrobe.