X Factor judge Sharon joined Jack's wife Lisa Stelly and adorable one-year-old Pearl at The Grove in Los Angeles on Thursday (26 September).
The trio were at the shopping mall for a Disney Junior event to celebrate the new animated series Don McStuffins. Jack was presumably not with them as he's busy rehearsing for Dancing With The Stars, the US version of Strictly Come Dancing.
The whole Osbourne family have been supporting Jack on the show and are clearly impressed by his dancefloor performances so far.
Jack, who has multiple sclerosis, is paired with pro dancer Cheryl Burke. In the first week they scored 23 out of a possible 30 points for their foxtrot, and 24 out of 30 for a rumba the following week.
Lisa tweeted this week: "I must say I'm deeply impressed with him. For someone who's never danced before, he is quite aware of the little things that usually take people a long time & lots of muscle memory."
Sharon has been in LA since the auditions stage of X Factor wrapped, working on her US show The Talk and, it's rumoured, filming her judges' houses stage of X Factor at her home.
Viewers will see the boot camp stage of the competition on ITV this weekend, with judges' houses following after that, where Sharon, Nicole Scherzinger, Gary Barlow and Louis Walsh will all decide which acts to take to the live shows.