Before establishing her eponymous line of nail lacquers and treatments, Deborah Lippmann was a jazz singer from Arizona who dreamed of making it in the New York City music scene. When she decided to head to cosmetology school, she discovered her calling: nails. Now she's a regular at photo shoots (for Vogue, InStyle, W and Elle) and a Fashion Week veteran, creating manicures for designers like Badgley Mischka, Rodarte and Donna Karan. Her celebrity clients include Mariah Carey, Sarah Jessica Parker and Lady Gaga. And as an ode to her musical roots, all of her polishes are named after songs.