Kelly Osbourne injured her ankle when she fell over on the set of 'America's Got Talent'.
The 'Fashion Police' star was visiting her mother Sharon, who was shooting the NBC talent search show, when she tripped and fell in front of a huge studio audience and was left embarrassed with a swollen ankle,
Kelly tweeted: ''I tripped on the stage like a dumb ass while visiting my Mumma at #AGT. I have the worst luck it had to be In front of the whole audience!!!
''I have a golf ball on my ankle! (sic)''
It was one of Kelly's last chances to visit her mother on the set of the programme after Sharon recently quit the series and declared war on its network NBC, claiming they discriminated against her son Jack by axing him from reality show 'Stars Earn Stripes', allegedly because of his multiple sclerosis (MS) diagnosis.
She said: ''I just can't be fake. It's discrimination and it was badly handled. It's time to move on.''
Sharon will remains under contract to NBC but 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.''
'Stars Earn Stripes' producer David Hurwitz has claimed Jack was never formally hired for the tough reality contest but Sharon and Jack insist the deal was moving forward on a verbal commitment.