If you're lucky enough to get into the new, ultra-exclusive Manhattan lounge KOS (Denzel Washington and Lenny Kravitz are partners), check out the mohair sofa in the VIP ''Kitty Box'' room. The comfy, wine-colored couch, custom-made by NYC-based designer Benjamin Noriega-Ortiz, came from Kravitz's home theater in Miami. ''The couch is beyond collectible,'' says KOS owner (and Kravitz cousin) Kevin Conner. ''It was flown in on Denzel's private jet.'' Just in time to kiss lots of celebrity butt.