All About My Mother by Rachael Stirling review – a joyous love letter to Diana Rigg

<p>Beautifully written by her daughter, this is a funny and intimate eulogy to the 60s star of The Avengers who went on to specialise in fierce, complicated women</p><p>The late actor Diana Rigg declined to call herself a feminist, noting: “Why would I burn my bra? I need my bra.”