Former US first lady Michelle Obama has ended Hillary Clinton's 17-year run as America's most admired woman. Clinton came third in the annual Gallup poll, with talk-show host Oprah Winfrey in second. Former President Barack Obama was most admired man for the 11th year in a row. President Donald Trump finished second for the fourth consecutive year. The poll has been carried out every year since 1946, with the exception of 1976.