nkiru doris "nk" okosieme (born 1 march 1972) is a former captain of the nigerian female football team (super falcons) football midfielder who played for the nigeria women's national football team across four fifa women's world cups (1991, 1995, 1999 and 2003), several african women cup of nations and 2000 summer olympics. okosieme was nicknamed "the headmistress" for her habit of scoring important goals with her head.