Since 2006, there has also been a women's tournament, featuring a mixture of international invitational teams and national selections. Some of the national selections are developmental sides of top women's rugby nations; others are full senior national sides. Starting in 2011, a second women's tournament, sponsored by the International Rugby Board, has been added. This event, featuring full senior national sides, will be known for at least that season as the IRB Women's Sevens Challenge Cup. This was part of an IRB plan to launch a full women's sevens international series starting in 2012–13.