Where are the beautiful photos of the magazine cover stars taken?

When you ask "where", do you mean the place where the photo was taken? Or how to find the organization that took these photos?

If it is a location, you can choose any location. Just communicate with the photographer.

If you ask the organization, it is the photography studio. Sometimes you can pay your own money for photographers, and every city has it. Of course, if you see the name of the photographer who takes pictures of stars from magazines, you can search his studio online and try your best to get in touch with him. If you can pay him what he wants, he should take your picture.