I have grand daughters and they have Barbie dolls, so, I make clothes for Barbie and I love doing it.
Here are a few I have done.
I used Caron's Simply Soft, a G hook and patterns I found on the internet. I use yarn because little girl's fingers are tough on dresses with all the pulling and tugging that goes on. I sometimes use baby yarn and an E hook.
I also make up my own dresses as it is fun to improvise.