Indoors and outdoors, on the beaches, boardwalks, back alleys and dance floors of Cancun, the youth of America reinvents that rite of passage, spring break, and the cameras of DreamGirls Inc. are there to record every flashed boob, bared booty, manicured cooter, wet T-shirt contest and "Skin to Win" dance contest South of the border. These coeds have checked their inhibitions stateside and everyone is out to get shit-faced and party. Basically a risqu? version of MTV's Spring Break, the DreamGirls tapes are undoubtedly big hits with all the nerds who never made the trip as well as a constant source of embarrassment for all the showcased revelers. Of especial note in Cancun are the wet T-shirt contests that utilize fire hoses instead of the usual bouncers with seltzer bottles. Party hardy.