By GINIA BELLAFANTE

Yes, Hillary, affordable mental-health care can be made available to all Americans. Just clone the ADVICE LADIES. For the past five years, this trio of gab-happy, Lycra-clad gal pals has spent each Saturday on the same Lower Manhattan corner doling out free counsel to angst-plagued passersby. Throughout their weekend career (they weekday in the ad world), the Advice Ladies have guided a New Yorker writer on love and makeup, helped a mounted cop understand his traffic-paranoid horse and listened earnestly to men who want simultaneous multiple marriages. "It's weird, but we get a lot of bigamy questions," says Amy Alkon (left). What the Ladies are really getting a lot of lately is attention. Robert DeNiro's Tribeca Films is developing a talk show around the lively street shrinks for fall, and book offers seem to be coming as frequently as odd clients. In the meantime, New York just keeps lining up. Why? "People used to solve their problems with beer and cheap sex," says Marlowe Minnick (center). "Now they're looking for more creative solutions."