Australian golf is celebrating a new international star after Stacey Keating claimed a second consecutive win on the Ladies European Tour.

In just her second professional season, Keating came from three shots back with a great closing round of six-under-par 64 to win the French Open by a stroke from Italy's Diana Luna (68) on Sunday.

The win followed her previous start triumph in the Spanish Open two weeks ago, when she prevailed in a playoff against Germany's Caroline Masson.

It lifted the 26-year-old product of country Victoria to sixth on the LET money list with 147,045 euros ($A190,100) in prizemoney for the season.

Keating's twin successes delighted home tour boss Warren Sevil, who has watched her progress since a stellar final amateur season in 2010 when she won the Australian amateur and the Tasmanian, WA and Victorian strokeplay championships.

"She is such a determined, gutsy player ... a real fighter," said Sevil.

Keating wasted no time catching Luna on the final day with four consecutive birdies from the second hole at Chantaco Golf Club.

She also birdied 14, 16 and 17 to go one ahead but thought she'd blown her chance with a bogey on the last when she missed a three foot putt as a loud fire engine siren started.

But a shattered Luna, playing in the group behind, followed suit by missing her five-foot putt for par.

"We were both disappointed to bogey the last but you know, that's golf and I'll take that," said Keating.

Keating was thrilled the French Open trophy presentation party included triumphant European Ryder Cup captain Jose Maria Olazabal and a childhood idol in former world No.1 Lorena Ochoa, who finished tied 22nd in a limited return from retirement.

"Ten years ago my dream was to meet Lorena Ochoa so standing here is unbelievable, so thank you to Lorena for playing in this event," said Keating.

Keating thanked her caddie and boyfriend Darren Peters, who has been at her side since she joined the tour in 2011 and through the disappointment of being disqualified from the Women's British Open a month ago after signing for an incorrect score.

"After the disappointment of the British I was really low in confidence, but obviously not now, so I'm very happy," she said.

"I've been playing well leading up to the British as well so it was just how I was going to handle it mentally as well I guess.

"I had no expectations because I was so disappointed and that hurt me a lot. Nothing on the golf course can hurt me like that now."