Most of us feel most beautiful in summer, when we can show a little more skin that just so happens to be perfectly bronzed. But a few warm-weather boo-boos can ruin your whole look. Start with your feet and legs. Wearing sandals, flip-flops and other foot-exposing shoes can take a toll on those tootsies, especially heels, which can dry and crack in hot summer weather. Protect your heels by sloughing off dry...