To feel bold, to look sexy or to stand out: these reasons and more are why women choose to be the "Lady in Red." But today, wearing red isn't just a choice of style - it's one of substance. The first Friday in February has been appointed "National Wear Red Day," to support the fight against women with heart disease. In honor of the day, let's look at how some of our favorite celebs wear this powerful color. Learn more about this annual day here.