My mom, a true cowgirl at heart (so embarrassing!), flew from DEN to ABQ with my dad for his conference, at which they were going to have a country-western dance. Naturally, she brought her favorite cowboy hat and wore it on the plane so it wouldn't get crushed. Well, she won best costume at the dance, and one of the prizes was ... a cowboy hat. She didn't want that one to get crushed on the plane back to Denver -- so she wore both hats.
She assures me that she didn't yell, "I AM ERDEHOFF'S MOTHER!!" as she walked through DEN wearing two cowboy hats, but I'm not convinced.