When two characters sport each other's usual hair length. They don't necessarily have to be switching their hairstyle as well.

If the character [i]only[/i] switched their hairstyle but not their hair length, use [[hairstyle switch]] instead. If the characters switched [i]both their hairstyle and hair length[/i], use this tag and [[hairstyle switch]] together. 

h4. See also:

* [[personality switch]]
* [[costume switch]]
* [[role reversal]]
* [[tag group:artistic license]]
hair length switch