The Ultimate Book of Spells - Season 1 Episode 22 Big Girls Don't Cry
Overview: A giant girl named Ilsa comes to Vonderland and becomes roommates with Cassy. Cassy keeps trying to help her fit in, but Lucretia (one of the evil twins) keeps doing spells behind her back to make it seem like Cassy is making fun of her. Lucretia pretends to be her friend and gets Ilsa kidnapped by Zarlak! The trio have to save her!