Keegan wasn't entirely into the whole formal dress scene, semi or no semi. He just plain wasn't comfortable in nice clothing. Some of it was just plain awful to deal with and most often ended up ruined in some way because he either spilled something, dropped something, or ended up doing something one shouldn't do in nice clothes.
So while most knew that Keegan slid by as much as he could around manner of dress. He would shoot for the low end of the requirement, very rarely taking the effort, and somehow still managing to pull it off. Though everyone who knew him knew he was just being lazy, saving rare times to actually pull out the nicer clothes.
A rather nice pair of jeans - about as nice as you can get for jeans - with a clean pair of black boots on the floor next to his feet. Beside him on the bed lay a nice black suit jacket. A nice white shirt was chosen and he was putting on his watch when he paused to look at her when she asked how it looked.
After taking a minute to take in how she looked before he smiled, and still did even after she looked at him with that familiar curiousity. "It looks wonderful, love. But you are never anything short of beautiful. And yes, I have changed. Why?" Somehow he suspected that she wasn't liking the jeans decision.