Charley Hull shot a sensational final round 62 to win the Lalla Meryem Cup in Morocco in a play-off with Gwladys Nocera, breaking her Ladies European Tour duck.
The 17-year-old carded seven birdies and an eagle to close the gap on the French player, whose dropped shot at the final hole handed Hull the chance to win at the first extra hole.
Hull started the day with back-to-back birdies at the first and second and she picked up two shots with an eagle at the par-five sixth, more birdies following at seven and nine as she went out in 30.
She made further ground with a birdie at the 11th and put the pressure on Nocera with a 3-3-3 finish to close the event on 15-under.
Nocera started the day five strokes ahead of Hull and managed to close with a round of 67, carding five birdies in the first 13 holes, but her finish was one to forget.
The three-time Solheim Cup player needed only a par at the short final hole, and found the green with her tee-shot, but she three-putted to hand Hull a playoff opportunity.
And the Kettering teenager took her chance with aplomb, holing from four feet for birdie at the first playoff hole to secure the 450,000 Euro tournament after Nocera had missed a 15-foot effort.
Hull said: "I shot nine under today which is pretty good. I thought I had it on the last in my actual 18th hole and my putt just missed.
"My hands were shaking like mad and I had a putt from four feet in the Solheim down the last against Paula and Lexi. I had the same here to win and I did it. I feel like I'm a good putter under pressure now."
Nocera added: "My putting has been really bad the whole week so you can't do anything when you putt like that. I tried my best; Charley played well today and she deserves it. She's been close to victory for a while and she's a great player so she deserves it. I had to play better and I didn't."
Another French player, Sophie Gicquel-Bettan, finished in third four shots back, with South Africa's Lee-Anne Pace and Hannah Burke of England sharing fourth.
Solheim Cup veterans Trish Johnson and Laura Davies finished in a share of eighth place on seven-under.