Kaley Cuoco wept with emotion as she unveiled her star on the Hollywood Walk of Fame. The Big Bang Theory star, who plays ditzy neighbour Penny in the E4 comedy hit about a group of geeky scientists, said she was crying before the ceremony even started. Flanked by her co-stars Jim Parsons, Johnny Galecki, Simon Helberg and Kunal Nayyar, Kaley revealed the 2,532nd star on Hollywood Boulevard.
