Sisterly love

“Between her and me we make 100 percent of our mum, and that makes my heart warm” ... Stella McCartney, the fashion designer, describes how she feels about her sister, the photographer Mary McCartney, with whom she is pictured, left, in a special issue of Vanity Fair magazine dedicated to sisterhood. The issue features a portfolio of sisters from the worlds of Hollywood, music, tech, and fashion, including Rumer, Scout, and Tallulah Willis; Sienna and Savannah Miller; and Maddi, Suki, and Imogen Waterhouse, along with essays on such subjects as the Mitford sisters.