If you don’t want to appear as if you’re glowing, avoid white, near-white and neon or fluorescent colors as these will reflect light into your face.
You can, however, wear white when planning to use it with a darker coat or sweater to avoid a “floating head” on a white backdrop.
Avoid red. This accentuates the natural red tones in your skin.
Avoid busy patterns and logos of any kind as they detract from you, the star of the photo.
Stay away from ill-fitting clothes or clothing you don’t normally wear. By choosing comfortable clothing that you already own and wear, you’ll look more authentic and confident in your headshots.
Lastly, avoid pastels or other flesh tones that are unflattering and wash you out.