The angel looks at him, most certainly not pouting, giving the outfit another once-over. Out of everything, it's the bow he finds particularly offensive. That is, if he were bothered by such childish displays.

He could give Crowley the argument about costumes being part of the celebration, specially when humans decided that, for a phase, when the day donned another name, they should have be of angels and devils, and saints. But commenting on such knowledge would mean giving Crowley some credit.

It's everything he can do not to roll his eyes, but his nose stays well up in the air. "I would have thought you would've gone for something a bit more...spooky."