Since the Second World War, high heels have fallen in and out of favor several times, most notably in the late 1990s, when lower heels and even flats predominated. Lower heels were preferred during the late 1960s and early 1970s as well, but higher heels returned in the late 1980s and early 1990s. The shape of the fashionable heel has also changed from block (1970s) to tapered (1990s), and stiletto (1950s, 1980s, and post-2000).Today, high heels are typically worn by women, with heights varying from a kitten heel of 1? inches (4 cm) to a stiletto heel (or spike heel) of 4 inches (10 cm) or more. Extremely high-heeled shoes, such as those higher than 5 inches (13 cm), are normally worn only for aesthetic reasons and are not considered practical.