Barbie Princess Doll and Regal Unicorn - Barbie Princess Doll and Regal Unicorn. - Enjoy fashion, fairytale and fantasy play with this Barbie princess doll and brilliant regal unicorn! A bright pink flowing mane and tail and magical white horn are magnificent touches. - Seat Barbie doll in the pretty pink saddle to head off into adventure or happily ever after! - This princess looks perfect in a full-length gown with a detailed bodice sure to make her the belle of any ball.