Qualifying rounds for the U.S. Open were this week. Venus and Serena Williams were as on-target as always, playing with their famous style, finesse and power. Despite the massive amounts of sweating they did on the court, we won’t be surprised to see them looking sleek in little black dresses while celebrating their victories this weekend. But as many of you know, the transition from court side to club chic isn’t as easy as the Williams sisters make it look.