DANDY ANDY: Andy Cohen has been tapped to host this year’s Council of Fashion Designers of America Fashion Awards, set to take place at Lincoln Center’s Alice Tully Hall on June 3. The “Real Housewives” ringmaster and host of Bravo’s “Watch What Happens Live” could well bring along a slew of reality stars and personal friends like Sarah Jessica Parker, but he will face a serious challenge — to top Seth Myers and his Comme des Garçons dress moment at last year’s awards.