The US Open Men’s Singles semifinal between Jannik Sinner and Felix Auger-Aliassime had the crowd buzzing, but it was Kaley Cuoco’s courtside transformation that caught fan attention. The “Big Bang Theory” star ditched her iconic Penny-blonde for a chic brunette look, showing up with fiancé Tom Pelphrey. While Sinner and FAA battled it out in a high-stakes rivalry, Cuoco’s bold style shift became the talk of the stands. Did you spot her new look? #Sports #USOpen #Sinner