Knitted this for my niece. Check out ravelry.com and look for the pattern for frozen flip dolls. Patterns for Elsa and Anna. I added different embroidery and hair as well as added the cape on her ice dress.
All i planned was knitting 'a' doll for my daughter. Just after I asked what colour hair she should have, it turned out to be Elsa. And where there is Elsa, you have to have Anna, too! Now she won't go anywhere without them :-)