I idolized Twiggy growing up and even got the famous haircut in fifth grade. The National Portrait Gallery in London celebrates Twiggy and her 60th birthday with a photographic exhibition highlighting definitive moments in her cover girl career. Twiggy's iconic status exemplified Swinging London—named for the city's vibrant fashion and cultural scene in the 1960s. With her boyish haircut, waif-like bod and bold lashes, Twiggy created a look that illustrates an era. To accompany the exhibition [on through March], The National Portrait Gallery has published a book | Twiggy: A Life in Photographs.