"Real Housewives of New York City" star Alex McCord said she was proud of those nude modeling shots that popped up recently. But the saucy mom turned prudish during an interview with Judith Regan on Sirius. McCord and "housewife" Bethenny Frankel took offense when their fellow guests - randy security adviser Bill Stanton and Bunny Ranch bossman Dennis Hof - asked if they'd be up for group sex. Sirius has agreed not to run the interview. Really? A Sirius source assures us Regan will air the naughty chat next Wednesday on Sirius Ch. 102.