Australia's Lee leads with Kingsmill set for Monday finish

The 18-year-old from Perth, a former world number one amateur, was in blistering form on Sunday, making six birdies and just one bogey before a superb eagle on the par-five 15th extended her lead to four strokes.

American Alison Lee was the closest challenger on two-under through 14 holes.

A group of five players are six strokes behind Lee including overnight leader Perrine Delacour of France, who made three bogeys in her opening six holes.

(Reporting By Simon Evans; Editing by Peter Rutherford)