When you think of Jennifer Lopez's beauty, you probably think about her famously glowing skin or fragrance empire. That might change now that she's jumping on the celebrity black nail polish bandwagon. Proving that dark polish really is here to stay, she's been wearing Dior Vernis polish ($19) in Black Sequins. The silver-flecked black is more glam than goth, and if you prefer gold over silver, get a similar look with this double-layered manicure.

If you're going to go dark for Fall, a few tips will make your polish go on smoothly and last longer. First, be sure to soak your hands and push cuticles back; this should help you keep paint on the nail bed rather than on cuticles. Always use a base coat to avoid any yellowing from the dark polish, and clean your nails twice when it's time to remove the color.