Sharon Osbourne has quit America's Got Talent because of NBC's "discrimination" against her son Jack.
The showbiz matriarch was furious when 26-year-old Jack was axed by email from reality show Stars Earn Stripes, allegedly because of his multiple sclerosis diagnosis, and has now decided she no longer wants to work for the network.
She told the New York Post newspaper: "I just can't be fake. It's discrimination and it was badly handled. It's time to move on."
Sharon remains under contract to NBC but she isn't worried about any possible ramifications.
She added: "All they can do is stop me from being a judge on another network for five years."