While there's never anything wrong with a classic princess ... Disney character. Get the whole family involved in these "Frozen"-inspired costumes. Whether you're Olaf the snowman, Elsa, Anna ...

Yep, it's official – Frozen's Elsa and Anna aren't officially ... "They weren't even Disney products. They were generic princess products they'd appended to a Halloween costume.

Frozen is one of Disney's greatest hits ... took Thomas backstage to see how her team keeps countless costumes ready for quick changes every night. "Right now we are in female gondola row ...