The $9 Hair Product Serena Williams Used for Round One of Her Final US Open

Serena Williams has done it again—the tennis superstar won her first match at this year's US Open, and she did it all while sporting some seriously glamorous hair. Williams played her first match dressed in a diamond-encrusted custom Nike set and shoes with studded curls to match. Williams's curls were created by celebrity stylist Nikki Nelms, who's also known for styling Solange Knowles, Zoë Kravitz, and more.

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(Image credit: Jean Catuffe, Getty Images)

The bejeweled curls are only fitting for someone who always makes an impressive statement with the way she presents herself on the court. While the Swarovski crystals are the main event, Nelms used a surprisingly affordable product to prep Williams's hair: a $9 curl milk. 

Nelms opted for the Maui Moisture Curl Quench Curl Milk while prepping Williams's hair. She first used it as a leave-in milk to help define curls and tame flyaways. After sweeping Williams's hair into a ponytail, Nelms added more to ensure her curls were as defined as possible. Afterward, she added crystals to Williams's hair to match her outfit. It's all the more impressive that Williams's curls held up so well throughout the match—anyone who works out knows that it's extremely tough to A) have a cute active hairstyle and B) make it sweatproof. 

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Associate Beauty Editor

Katie Berohn is the associate beauty editor at Who What Wear. Previously, she worked as the beauty assistant for Good Housekeeping, Woman's Day, and Prevention magazines, all part of the Hearst Lifestyle Group. She graduated from the University of Colorado, Boulder, with a major in journalism and minor in technology, arts, and media, and earned her master's degree at NYU's graduate program for magazine journalism. In addition, Katie has held editorial internships at Denver Life magazine, Yoga Journal, and Cosmopolitan; a digital editorial internship at New York magazine's The Cut; a social good fellowship at Mashable; and a freelance role at HelloGiggles. When she's not obsessing over the latest skincare launch or continuing her journey to smell every perfume on the planet, Katie can be found taking a hot yoga class, trying everything on the menu at New York's newest restaurant, or hanging out at a trendy wine bar with her friends.