James Coldrey/Action Press/startraksphoto.com
Katy Perry may lead a glamorous and fast-paced lifestyle, but she makes sure there's some organization in there, too.
And we're not talking about the star keeping up with all the scheduled meetings in her planner or being punctual for events (although, those things are important, too). It's something a little more intense than that.
"I am so OCD," Perry tells Z100 morning radio host Elvis Duran at the iHeart Radio Music Festival. "I always want to put things in alphabetical order."