Through 1993, the tournament was an official stop only on the Ladies European Tour, with the exception of the 1984 edition, which was co-sanctioned by the LPGA Tour. Starting in 1994, it became a permanent LPGA Tour event, which increased both the quality of the field and the event's prestige. It has been an official LPGA major since 2001, when it replaced the du Maurier Classic in Canada. In 2005, the starting field size was increased to 150, but only the low 65 (plus ties) survive the cut after the second round. In both 2007 and 2008 the prize fund was £1.05 million. Starting in 2009, the prize fund changed from being fixed in pounds to U.S. dollars.