Although early sources said otherwise, new information indicates that Olympic athletes must wear their country's team uniforms (no matter what the brand) during opening ceremonies and on the medal ceremony podium but may wear their regular sponsor's apparel in competition.
Eliza Audley is a newcomer to Olympic tennis fashion and you can see it on U.S. team mates Lisa Raymond and Varvara Lepchenko. Pictured above are their red, white and blues; left is what Raymond is wearing in London, right Lepchenko. A small American flag made with Swarovski crytals adorns each top.
Kudos to Eliza Audley for U.S. Olympian apparel designed and made in the USA.