The Supper Club has turned into one of this town’s major havens for hep cats who swing with style. Even if they’re not into being “hep” or dressing up (zoot suits are all the rage at such clubs), one thing’s certain: Swing couldn’t be hotter. The mobbed dance floor at this posh club is testament to the big-band era.

The night begins with the impressive 16-piece dance band featuring the sassy, sophisticated song stylings of lovely Cynthia Scott, crooner Matt Carusi, and popular guest singer Marc Lauren (Paris’ answer to Harry Connick). As a Dorsey medley plays, the dance floor quickly fills.

The place really heats up with the spectacular musical revue “This Joint Is Jumpin’.” The night I attended, Broadway’s totally amazing Vivian Reed and the equally exciting Kevin Ramsey had joined the hot, zoot-suited swing dancers in an unprecedented tour de force that almost tore the roof off the club. Reed is, arguably, the finest working female performer in show business today. Her voice just soars across the footlights, filling the room with pure, unrestrained vocal magic. She adds a touch of gospel and Motown to a show-stopping “Sweet Georgia Brown,” turning it into a tour de force non pareil. If you think I’m carried away with superlatives, just catch what she does with Peggy Lee’s classic “Fever.”

Co-star Ramsey is the only male I know who could possibly match Reed in vocal ferocity, red-hot delivery, and some mean tap dancing. His version of Berlin’s “Steppin’ Out With My Baby” almost stopped the show.

Performances are every Friday and Saturday, following dinner. Reserve early. They’re sold out weeks in advance. Reservations and information: (212) 921-1940.