Is this the Brat girl summer? Marina Hyde predicts a sticky end for Trump-Vance, how to be a Norwegian parent, and Ask Philippa on sibling rivalry

Never doubt the instincts of Donald Trump, warns Marina Hyde, who just appointed a ‘never Trump guy’ as his running mate. Let your kids roam free, stay home alone, have fun – and fail – Norwegian style. Charli xcx’s new album, Brat, highlights how many young women now aspire to live – dirty, hedonistic, happy and bra-less. And ‘My brother’s mental illness hovers over my family life’ – Philippa Perry answers a reader.