What separates burlesque performances from straight-up stripping? One word: class. And Moon River Cabaret has class in all the right places. At the troupe's monthly residency at Vagabond Kitchen & Bar, performers and cofounders Rio Chavarro and his wife Sofia Luna get sexy with style, even incorporating a Mad Men theme for a touch of Don Draper suaveness. Moon River shows go beyond the feather fans and tassel twirling you imagine when you think of burlesque; this is a cabaret, after all, so performances also include comedy and singing. But Moon River can get naughty too. Consider its "Den of Vice" show, part of this year's Art Undressed festival, billed as "a dark and dangerously arousing collection of sensual burlesque performances" and featuring Franki Markstone, the "bodacious bisexual"; Miss Marina Elaine, "the sweetheart with a switchblade"; and other titillating talents. Chavarro and Luna are cozy with much of South Florida's burlesque community, so devotees of the troupe get to witness the skills of a wide range of local performers. You'll cheer; you'll gape; you'll get turned on. Just don't call them strippers.