It's very obvious that they are to resemble Elsa and Anna from Disney's Frozen. But instead of being made of the sturdy rubber and plastic like the "real" ones, these are made from very thin, hollow, plastic. They sing, but instead of singing a song from the movie, they sing a high-speed, Chipmunk-style blurb from the late nineties song "I'm a Barbie Girl."
The packaging seems to have been a photocopy of the original Disney with words changed.
The girls don't know the difference and have had lots of fun playing with them. The only problems arise when limbs fall off (they just pop back on) and when the clothing needs mending (I needed to reattach something to both dresses on the first day!). The Elsa doll did have her signature braid, but Ruth likes to comb her dolls' hair, so that came out.
For the most part, actual Disney authorized Frozen toys are not available here. At Christmas we did find licensed plush of some of the characters, and a few figurines. It doesn't really bother us though. The girls are by no means hurting for playthings. :) And if the stores don't have it, we can't be pestered into buying it :)