Alex says she went with one of her friends as Hansel and Gretel, and the next year she was C-3PO.
Hansel and Gretel is an fairy tale that has been popularized and modernized. It is about two young children who find a gingerbread house in the woods.
C-3PO is one of the two popular droid characters from the massively popular Star Wars series of movies. He has been played by Anthony Daniels in all 6 movies, several cartoons, and numerous video games.