Ever since her mother Oracene introduced her to the Australian underwear brand Berlei, Serena Williams has been their faithful customer and now she’s become their ambassador. Their sports bras have been one of Serena’s best clothing discoveries and she’s been wearing exclusively them underneath her Nike apparel for eight years, as the "first bra she’s seen that’s made for real breasts".
Apparently, Nike doesn’t mind that Serena finds Berlei bras more suitable than theirs, actually, Nike dyes them to match their outfits. Now she will join the development process to help create personalized high-performance bras to match her tennis dresses.
Another WTA star is the face of an underwear brand – Caroline Wozniacki for Danish JBS – while some players prefer to be underwear-free, like Marta Domachowska for the February 2013 cover of Polish Playboy. (source: The Slice)