It's because he makes a lot of mischief when he wears it

I'm not sure I'm ever going to get this costume off of him.  He slept in it Saturday night.  (Also, we're now referring to it as his Max costume.  I'll let you figure out why.)

Saturday:

 

Sunday:

 

And today:

Adele isn't quite as enthusiastic about her costume, but she's still a trooper.

HAPPY HALLOWEEN!