Once upon a time, nail art meant choosing between French tips and whichever hand-painted flower your local salon offered. These days, though, it looks a little different. Manicures are getting coated in chrome, covered in charms, pierced, magnetized, and sculpted into shapes that barely look like nails at all. A single set can rack up millions of views on TikTok, inspire a flood of re-creations, and become just as talked about as the celebrity w…