I'll Have What She's Having

A hilarious look at the eating habits of the fit and famous--from Gwyneth's goji berry and quail egg concoctions to Jackie Kennedy's baked potato and Beluga caviar regimen--Rebecca Harrington leaves no cabbage soup unstirred in her wickedly funny, wildly absurd quest to diet like the stars.     Elizabeth Taylor mixed cottage cheese and sour cream; Madonna subsisted on "sea vegetables;" and Marilyn Monroe drank raw eggs whipped with warm milk. Where there is a Hollywood starlet offering