Ana Ivanovic's look at Wimbledon 2014 is about as clean and simple as tennis fashion gets. According to adidas she's wearing separates that give the look of a tennis dress, an All Premium adidas tank paired with the All Premium skort, both made of Climacool fabric in a glorious bright white. Still looks like a dress to me but whatever, this is Ana at her finest. She is, IMO, the Grace Kelly of tennis.
Look for the tennis separates in a beautiful fuschia, called Vivid Berry, as well. Ana's shoes are the adizero Tempaia III.