Mei Kawajiri hand-paints and sculpts custom designs for a clientele that includes Heidi Klum and Bad Bunny.

Our writer gets a velvet manicure with Selena Gomez's manicurist, Tom Bachik, using Olive & June's Magnetic Gel Mani System.

Echoing the black-and-white packaging of her pre-makeup skincare products, each of Nogueira's nails was split in half—though ...