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 shows us how to make sports bra look oh-so-glamorous! View pics

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

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

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

Serena Williams on Confidence, Sports Bras, and Body Image - Serena Williams Launches Berlei at Macy's

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

Tennis Player Serena Williams attends the Berlei Sports Bras Launch News Photo - Getty Images

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

Serena Williams flaunts athletic body in Berlei sportswear

Serena Williams on Confidence, Sports Bras, and Body Image - Serena Williams Launches Berlei at Macy's

Maidenform High- Impact Cutout Mesh-Panel Wireless Sports Bra DM7994 - Macy's

Mightly Girls Fair Trade Organic Cotton Sports Bras 3-pack

Nike Plus Size Dri-FIT Swoosh High-Support Non-Padded Sports Bra - Macy's

b.tempt'd Women's B.Active Sports Bra 910505 - Macy's

ID Ideology Women's Painterly Waves Low-Impact Sports Bra, Created for Macy's