Supermodels, Oasis and Ab Fab designer labels marked the heady years of the 1990s. But it was also a deeply problematic time, so as Gen Z looks back on that decade with longing, Mary Portas explains why she’s looking ahead with hope F rom Linda Evangelista being shot for Vogue in the windows of Harvey Nichols to the shop becoming known worldwide courtesy of a cameo role in Absolutely Fabulous , the Nineties were an unforgettable decade for me. And as a new spirit of optimism, experimentation