Serena Williams reaches another milestone turning 40 years old today. The tennis star has dominated the sport for years, bringing home over 70 titles in her career span. Williams is an unstoppable leader and we celebrate her today with a gallery of her fearless fits on and off the court. 

Serena Williams and her precious three year old daughter Alexis Olympia Ohanian Jr. debuted their first fashion campaign with Stuart Weitzman. The stylish mother-daughter duo are absolutely fabulous and flaunting their matching outfits in the new campaign suitably titled Footsteps to Follow.