Jack Osbourne contemplated quitting Dancing With The Stars on the eve of Monday's (16Sep13) big premiere because he was convinced he would never compare to his celebrity competitors.
Family matriarch Sharon Osbourne reveals her son, who suffers with Multiple Sclerosis, believed he had made a huge mistake by signing on for his dancing debut after sitting in on practise sessions for fellow contestants including Valerie Harper, Elizabeth Berkley, Amber Riley, Christina Milian and Leah Remini.
Jack eventually decided to face up to his fears and hit the dancefloor for the season premiere on Monday - and Sharon admits she was wracked with nerves as she cheered him on from the studio audience because of her son's pre-show confession.
Appearing on her The Talk on Tuesday (17Sep13), Sharon said, "I swear to you I felt physically sick before he started to dance because it's something he's never ever done and it wasn't until the day before that he actually got into the studio, out of the rehearsal room into the physical filming studio, and saw everybody else dance, because they watch everyone else dance.
"He texts me and says, 'Mum, I've done the wrong thing here, I can never compete, I've done the wrong thing.' And so I'm like, 'Oh, my goodness', and then he said that day he messed up his routine, so I was like, 'Oh no, it's gonna be just uncomfortable for him.' And then when he came out and he started (dancing) and... he was like, cruising, and I was like, (relieved)... Not just for Jack, but for all the people who have never danced before, it's really brave."
Jack had no need to worry - he and his professional partner Cheryl Burke impressed the judges with their foxtrot, scoring a respectable total of 23 out of 30.