A Bra Can't Help You'- Serena Williams Reveals a Secret During

American tennis player Serena Williams reveals a key secret as to what has helped her all along her journey to become a successful player.

Serena Williams Casually Slays in a Sports Bra on the Red Carpet

Serena Williams sneaks off to VOMIT during Australian Open final

Serena Williams Casually Slays in a Sports Bra on the Red Carpet

5 MINUTES WITHSERENA WILLIAMS - Apparel

A Bra Can't Help You'- Serena Williams Reveals a Secret During

Serena Williams already won the gold medal with this stunning

Serena Williams says she had a period when pregnant

Serena Williams, Fashion Designer

Serena Williams bounces through to the next round in Miami but

Serena Williams and Alexis Ohanian welcome their second daughter

Serena Williams reveals hilarious story about what she found in

Meghan Markle Skips Best Friend Serena Williams' Baby Shower

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

NEW YORK, NY - AUGUST 25: Tennis Player Serena Williams attends the Berlei Sports Bras Launch At Macy's With Serena Williams on August 25, 2016 in New York City People: Serena Williams Stock Photo - Alamy

Serena Williams' secret to success: 'I never looked back

Serena Williams is fit, but doesn't like to work at it

INSPIRING Sisters: 5 Work And Life Lessons From Venus And Serena Williams