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

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

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

Serena Williams - My favorite sports bra brand, Berlei USA is finally available in the US at Macy's! I've been wearing these bras for over 10 years! It's an essential in my

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

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

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

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

16 Berlei Bras Line Stock Photos, High-Res Pictures, and Images - Getty Images

Serena Williams flaunts athletic body in Berlei sportswear

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