An agent acting for a celebrity would know exactly how to handle this, including paying the photographer a fair price for their work and the full rights, and ha

An agent acting for a celebrity would know exactly how to handle this, including paying the photographer a fair price for their work and the full rights, and handling all the paper work. That's their job. It's not hard either. I mean, you could just step into a high street photo shop and have your portrait taken professionally, keep all the usage rights to it for a small amount of money, and end up with a photo already better than most of those Wikipedia examples from the article. But professional photographers usually are willing to negotiate this upfront as well, and why not? The fee rises, but not beyond what most celebrities can afford to pay for this. More relevantly though, an agent won't let the copyright sit with the photographer by default if they need that photo for all sorts of stuff themself, including commercial use. Besides, larger agencies are likely to have photographers on staff who do this.