3. Guys & Dolls
Guys & Dolls is retro chic, with a sexy twist, of course. The staff wears "1920s fashion forward flapper" ensembles under the 25-foot ceilings, 20 chandeliers, and giant LED screen DJ booth. The LA bar and lounge opened in 2009, and has hosted many a Hollywood party. Kim Kardashian helped launch Sugar Factory's Couture Pops there in January.