Dominated by teenagers, Annabel Dimmock shot a final round 73 with an 11 under par 214 total in the Helen Holm Scottish Open Strokeplay Championship at Troon.
Connie Jaffrey, the Scottish Girls' Champion and a Troon Ladies' member, was also in impressive from, closing with a 71 to finish in outright second place and three shots behind on eight under par 217.
Five ahead after rounds of 70 and 71 over Troon Portland, Dimmock, a 17-year-old from Wentworth, had increased her lead to six by the time she reached the turn in two under par 35 in the final round over over the famous Royal Troon.
She then dropped shots at tenth and the long 11th to give Jaffrey a glint of hope. But more birdies at the 12th and 15th helped seal the victory.
Jaffrey, also 17, was delighted with her runner-up finish. "That was my best ever round over Royal Troon and I played really steady today," she said after her six birdie round. "I went out thinking I had a chance to win and I got close. This rates as the best result of my career."
Jaffrey will be playing in the Scottish Ladies¹ Amateur Championship at Prestwick next month and will then defend the Scottish Girls' Championship at Dumfries and County in May before heading to the US and a golf scholarship at Kansas State University.
Dimmock is currently on a gap year and her goal is to make the GB and Ireland team to defend the Curtis Cup at St Louis Country Club in June. A win in the Jones Doherty Challenge Cup in Florida at the start of the year also boosted her hopes.
She has also been inspired by Charley Hull, the 18-year-old Ladies' European Tour winner who helped Europe win the Solheim Cup in the US last year.
"Charley has been great for girl¹s golf and she has proved that there isn¹t too big a jump between the top amateurs and the professionals," she said. "But getting the timing right is the key to turning professional."
Ireland¹s Olivia Mahaffey (Royal County Down) made it a clean sweep for the teenagers. The 16-year-old had a best of day seven under par 68 on a bright and breezy day and finished in third place on five under par 220.
The highlight of her round for the Irish Open Girls' Champion was an eagle at the ling 15th a drive, five iron and 12 foot putt.