I read on Tumblr that there's a crossover between Monster High and Ever After High which is pretty cool. It all started when someone stumbled upon the new Monster High Boo York Boo York junior novel.
In the last few pages of the book, Astranova from Monster High is talking on her iCoffin with Apple White and Raven Queen from Ever After High:
It would definitely be awesome to see Monster High and Ever After High characters crossing paths in a good story.
Like, how would Cleo de Nile and Apple White react when they meet?
Will Toralei Stripe and Kitty Chesire make good friends?
How about Clawdeen Wolf and Cerise Hood? et cetera.
Hope Mattel comes up with a special on this. I'd really watch it.