Jon and Kate Gosselin’s fragile peace has exploded and Breaking Celebrity News has learned the trigger was a blow-up between the pair after Kate trekked to Mexico – and left the kids alone with a teenage babysitter!

While Jon is refusing to publicly slam Kate – even though she went on the Today Show on Wednesday and fired off “hurt” and “anger” claims at her ex-husband -- privately the dad-of-eight still has serious questions about her parenting skills, we’re told.