IT really is a case of blonde ambition. Women with fair hair are more aggressive and determined to get their own way than brunettes or redheads, according to a study by the University of California. Researchers claim that blondes are more likely to display a “warlike” streak because they attract more attention than other women and are used to getting their own way — the so-called “princess effect”. Even those who dye their hair blonde quickly take on these attributes, experts found. The study could cast fresh light on the ability of Joanna Lumley, the actress and former model, to...