I might try to crochet a beret for my doll.
DIY Barbie Blog : How to Make a Beret for Barbie (French Felt Hat-Fr...: I saw a great post on Hello Sewing showing folks how to make berets for women and decided it would be fun to make one for Barbie using felt...
It is now a week later and I made a poncho and beret for my doll.
The post link above also had a link for a poncho and can be found here. I had used Craftsmart yarn and a size H crochet hook. The last row of the poncho is some purple mohair yarn I had on hand
I winged the beret, I used the same yarn and H hook I used for the poncho:
1: ch 18, slip st with first ch
2: ch 1, 2 sc in same stitch, sc in the next 2 (24 sc)
3: Working continuously around, sc even around (24 sc)
4: sc 2 tog, sc in next 2 (18 sc)
5: sc 2 tog, sc in next sc (12 sc)
6: sc 2 tog (6sc)
I finished it off with making a chain of 6 and finish off leaving a long enough tail to close off the top and create a cute decorative loop on top.
Since I don't own a real Barbie doll, I can't say for sure how well it will fit. You can adjust yarn and hook size to accommodate the doll.