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TIM GUNN

If fashion guru Tim Gunn is in your neighborhood, you bettercover your tummy. Ask him: What is the biggest fashion mistakethat's easy to avoid?

"The bare midriff!" Gunn groans." I just don't believe in showingskin that people don't need to see. I find it's unattractive on a 16-year-old girl and a 60-year-old woman! Sorry to sound like I'mpontificating."

He saves that for his series "Tim Gunn's Guide to Style" (catch asneak peek 10 p.m. Wednesday on Bravo cable). He also will star inseason four of "Project Runway."

And yes, he has his own fashion faux pas hiding in his closet. "Ido have cargo shorts. I can't seem to throw them away," he …