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So when you become a billionaire, the first thing you do is upgrade your crib status correct?? That's EXACTLY what Dr. Dre decided to do. The LA Times reports that fresh off the sale of Beats By Dre, the doc bought a house from NFL star Tom Brady & his supermodel wife Gisele Bundchen. The house is in Brentwood, CA and has "18,298 square feet of living space, a gym, sauna, five bedrooms, nine bathrooms, and seven fireplaces."