Tennis star Serena Williams attends the launch of her Berlei Bras News Photo - Getty Images

Tennis star Serena Williams attends the launch of her Berlei Bras Line at Macy's Herald Square on August 25, 2016 in New York City. Get premium, high resolution news photos at Getty Images

140,134 Serena Williams Photos & High Res Pictures - Getty Images

Serena Williams Flashes Her Bra at Pre-US Open Event: Photo 3742548, Rafael Nadal, Serena Williams, Venus Williams Photos

Serena Williams Flashes Her Bra at Pre-US Open Event: Photo 3742552, Rafael Nadal, Serena Williams, Venus Williams Photos

Serena Williams - This Berlei SF3 High Impact Sports bra is one of my absolute favorites! It gives great support and is comfortable to wear on and off the court. Love this

Serena Williams showcases dance moves while sporting lingerie in Melbourne

Tennis star Serena Williams attends the launch of her Berlei Bras News Photo - Getty Images

Serena Williams shows off Berlei bra at lingerie event ahead of Australian Open

Serena Williams: 'I didn't retire, I just didn't know how I would come back

Serena Williams flaunts figure as she strips down for Australian lingerie company

Serena Williams' career in photos

5,821 Serena Williams Fashion Stock Photos, High-Res Pictures, and Images - Getty Images

Serena Williams flaunts athletic body in Berlei sportswear