WARDROBE: You will want to own at least two suits. When shopping for suits, the jacket shoulders should fit smooth, with no “hump” below the collar, and the length should be such that when you stand at attention, the end of the jacket falls between your thumb tip and the first joint. I suggest that you buy your suits off the rack, (in a department store) but then take them to a tailor to be fitted in the waist and sleeves. Have them tailored for a good fit without gun or gear, while the coat is buttoned. That way, if wearing the suit unarmed for a business meeting, it will look right. When working armed, always leave the coat unbuttoned, which leaves just enough slack so the weapon cannot be seen.
Wearing a sidearm and gear every day is really hard on your clothes, both the waistband of the pants and the jacket lining take a beating. The lower back part gets bunched up sitting in the car, since you have to leave the jacket on over your gear. A good tailor makes all the difference in the world, especially if you’re built in such a manner that your suits and shirts need major work to fit right. They are finally making good-quality separates that save on tailoring, and that might be an option. However, having a great tailor means I can grab a great suit on sale at a discount place, and know he’ll make it right.