Talk:The Secret Library: Olaf and the Tale of Miss Nettle/@comment-24249141-20160219145540/@comment-1784834-20160504042813

I think it's because Kristen Bell and/or Idina Menzel were simply unavailable at the time, or they can't appear because they're not officially part of the Disney Princess line-up, because their own franchise is so profitable, it would be redundant to include them in the Princess line-up.