You don't have to be an A-lister to take a sneak peek inside your favorite celebrity's home. Every month, we hand over the keys to the hottest star houses on the market, so you can see how the other half really lives. This month, Joan Collins offloads her stunning New York apartment, Marc Anthony sells his Florida mega-mansion and Tom Cruise secures a buyer for his Colorado ranch. Click or scroll through and let's take a look...