Memoirs of Catholic upbringings, especially as told by celebrities, have a habit of hitting a sour note when they come to the Church, all blame and reproach, a bad experience that they have managed to put behind them. But Mary Portas offers the opposite. Warm, witty and evocative, Shop Girl is a cloudless trip down memory lane for anyone who, like her, grew up in a working-class home with Irish parents, in the English Catholic Church of the 1960s and 1970s. The retail guru recalls it all in such detail – the rosaries hanging on the beds in the family’s modest semi in north Watford, the holy water font by the front door, the wearing of green ribbons on St Patrick’s Day parades. Of her devout mother, Theresa, born on a farm in the north of Ireland, Portas writes: “In