Rubuta ci gaba don wannan sakin layi - Irène "Iet" Maria Jo Arnoldina van Feggelen (20 ga Agusta 1921 <unk> 17 ga Yuli 2012) 'yar wasan tsere ce ta Dutch. Sunan farko a wasu lokuta ana kuskuren rubuta shi a matsayin Let, kuma ana ba da sunan mahaifiyarta sau da yawa kamar Koster<unk>van Feggelen ko Koster saboda aurenta da dan wasan wasan polo na ruwa na Dutch Ko Koster a shekarar 1943. Yaƙin Duniya na II ya hana aikinta, duk da haka ta lashe lambobin yabo biyu a gasar zakarun Turai ta ruwa a 1938 da 1947
kuma ya kafa tarihin duniya guda goma sha daya tsakanin 1938 da 1947. Bayan ta yi ritaya, ta zama mai horar da 'yan wasa na kasa a cikin wasan motsa jiki da kuma wasan motsa jiki. A shekara ta 2009, an shigar da ita cikin Gidan Wasanni na Duniya.