Moira de Villiers (born 16 March 1990), also known by her married name of Koster, is a South African-born New Zealand judoka.[2] She competed in the 70 kg event at the 2012 Summer Olympics losing in the first round.[3] She competed in the women's 70 kg event at the 2014 Commonwealth Games where she won the silver medal.[4]
De Villiers is married to Jason Koster; he is also a judoka.[5] They have a daughter together and her husband has a son from a previous relationship.[6]
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