Cheryl Fernandez-Versini posted an adorable snap of Simon, 55, and 17-month-old Eric to Twitter, showing off their matching outfits.
She wrote: "Simon and his mini me [sic]."
Cheryl, 32, also took to the opportunity to dismiss any rumours of a rivalry with fellow judge Rita Ora.
Ensuring that there will be no rumours of a feud between her and Rita, 24, Cheryl posed for a cute Instagram snap with her new bestie.
The caption read: "The GIRLS #BootCamp [sic]."
Rita recently discussed the show's history of warring female judges – insisting that is not what she's there for.
She told The Sun: "That's not something I'm focused on. Anyway, I think that will be looked at differently now.
"You see female pop stars supporting each other more. Plus, I had only metCheryl once before. But she is very hot and pretty."
It looks like all the judges are getting on fine – but for how long?