You may also use this address to write a mail to Brad Pitt. Brad Pitt, Plan B Entertainment Inc., 9150 Wilshire Blvd., Suite 350, Beverly Hills, CA 90212-3427, USA is the address. Let's look at the producing company's address. It's not a post office box number so that leaves us with building numbers. There are two buildings on the property but only one has a number on it. That must be the one he lives in. Building #9 is where they keep most of their offices. The physical address there is 9151 Wilshire Boulevard. They have another office located at 9096 Wilshire Boulevard (which seems to be an apartment building). If you want to send him something then you should do it through an agency or friend. Sending letters to celebrities is almost always ignored or returned by the postal service. However, if you have an autograph from him then you should sell it online or at a convention. Also, you shouldn't send him anything that contains cigarettes as many countries have strict laws against sending items across borders that contain tobacco products. In conclusion, you should send letters to celebrities through an agency or friend because they will get noticed by them more often and you'll probably get some compensation for your effort.