Five years ago, somewhere between bouncing back from a nearly career-ending knee injury and regaining her spot as the No. 1 seed in women’s tennis, Serena Williams decided to become a nail technician. In the years since, her tennis career can be mapped not only by her quickly growing wins, but by her wildly decadent nails. Colorful, often bedazzled, and unapologetically long, they are her personal trademark amidst tennis’s ho-hum dress codes. Here’s a look at her most memorable manicures, including the brightest, the boldest, and the most badass.