I was involved in my first headshot photo shoot in March and became enlightened to the fact that not many people consult a stylist for this critical part of a professional image. LinkedIn is rife with photos of highly-skilled people in ill-fitting or over-embellished garments, in an image that they clearly paid a lot of money for. It's time to face the truth: your overall image is being seen by any curious person before a potential meeting in today's workplace.
If you are already working with a personal stylist/shopper for your business wardrobe, kudos. Listen to their advice when it comes to the headshot and if they understand proportions, chances are you will look exactly as you need to.
If you are not already working with a personal stylist/shopper (like the majority of non-executives), it would be worth your while to find a stylist for your headshot, or get a recommendation for one from your photographer, just to ensure you are putting the necessary effort in to look your best. A good headshot can last you for years, and a good stylist will ensure that your wardrobe reflects that, without looking dowdy or out of date.
Shameless plug: If you need this, I can help you. After a brief meeting to go over your professional situation and personal style goal, I can find an outfit (or outfits) that would look great on you, and on camera. After fitting, you purchase the outfit from me (plus my fees), and you're set.