Thinking of wearing a kitten heel out this weekend? Ba-na-nas. According to Rachel Zoe, you have to stick to flats or go sky-high. And wide-leg jeans? So in. The celebrity stylist is sharing these gems and more in the September issue of Redbook, which features Zoe's seven principles of style. Want some free advice from one of Hollywood's fiercest fashionistas? Here are some tips.