nytime someone throws a party at a clothing store, you know the crowd will be well dressed. Expect nothing less at New York Nights at Bloomingdale's. Sponsored by DETAILS magazine and Bloomingdale's itself, the event will bring together Brit Rock, Guitar Hero, and new men's looks (finally!). Ever played Guitar Hero in a department store? It's a lot like playing it anywhere else. But there will also be hors d'oerves, and drinks, the sign of any good party. If you like saving money, there's something for you to; sportswear and denim will be discounted from 20% to 30% off. Wear something nice. The event takes place today at Bloomingdale's.