My daughter is happily dozing in a zipper-front sweatshirt I spent half an hour insisting was "not pajamas." If it's a battle of wills, the smart money is always on Sage.
Evan: "Hey, Sage. How about we're famous actors, and you're the cutest one and I'm the awesomest one, and we have to wear disguises wherever we go, and..." [moves, sadly, out of earshot]