Sharon Osbourne Breaks Down In Tears After Watching Son Jack's Performance On 'Dancing With the Stars' (VIDEO)

It was only last week that Sharon Osbourne was reduced to a blubbering wreck on 'The X Factor' by returning hopeful Stephanie Woods - and she's at it again.

This time, the cause of Sharon's waterworks was son, Jack Osbourne, who got Mrs. O all teary-eyed after dazzling with his debut dance on the US version of 'Strictly'.

Sharon Osbourne was reduced to tears after watching Jack's dance

Despite a terrible few weeks, which saw his wife Lisa miscarry their second child, Jack wowed the 'Dancing With the Stars' audience - which also included his dad Ozzy Osbourne - with his first dance of the series.

Sharon was joined in the audience by husband, Ozzy

The 27-year-old, said he is doing the show to raise awareness of multiple sclerosis – the disease he was diagnosed with in 2012.

'Right now I’m physically able to do DWTS but it might not always be this way so I don’t want to miss this opportunity,' he explained.