Disney employees used to share underwear!
Disney has really strict dress codes for their employees. This is because
they don't want to ruin the illusion of the characters being real. One of
the particular quirks of this dress code is that employees were not allowed
to use their own underwear while in character! This is because normal
underwear tends to bunch up and bulk under the costume.
To prevent this, Disney would have a communal pool of underwear that
employees had to turn in every day to be washed along with their costume!
The policy was in place until 2001. We haven't been able to find what the
current policy is; if you know it tell us in the comments.