World Rugby also organises the women's Rugby World Cup, also held every four years. It was first held by the IRB in 1998, though tournaments in 1991 and 1994 were retrospectively recognised in 2009. The women's World Cup is contested by fewer teams than the men's Cup, with only the 1998 and 2002 editions featuring more than 12 teams (these competitions both had 16 teams, compared to the 20 teams in the men's Rugby World Cup).