Suzann Pettersen of Norway held off teenager Lydia Ko of New Zealand by two shots to win the Evian Championship on Sunday, clinching the second major title of her career.
The tournament in France - which counts as the fifth and final major on the women's calendar for the first time this year - was reduced to a 54-hole event after torrential rain wiped out the first day.
Pettersen had started the final round one stroke behind overnight leader, Mika Miyazato of Japan, but a three-under-par 68 proved good enough in blustery conditions as she finished clear of the field on 10-under.
Ko, who was level with Pettersen after 36 holes, had to settle for 70 which meant she missed out the chance to become the youngest-ever major champion.
Lexi Thompson of America matched the 68 of Pettersen to claim third place on her own at six-under, while South Koreans Ryu So-Yeon and Se-Ri Pak shared fourth a stroke further back.
Having started at the top of the leaderboard, Mizayato endured a nightmare day with five bogeys, a double and a triple in an eight-over-par round of 79 that saw her plummet down into a tie for 19th.
But it was all smiles for Pettersen, 32, who tasted major success for the second time after a six-year wait having won the LPGA Championship in 2007.