Pornanong Phatlum made the Royal Lytham course sing for her again as she held on to her overnight one-shot lead of the Women's British Open after the third round on Saturday.
"That's my longest streak ever without dropping a shot", said the delighted 22-year-old, who is aiming to become the first British victor since Catriona Matthew at Lytham in 2009.
"I hit the ball really solid which was good after a pretty average ball striking day yesterday", she said.
"I first played this tournament in 2012 and, since then, it's become the one that I want to win", said the 2011 US Women's Open victor, who added a second major at the 2017 ANA Inspiration.
"I'm glad I finally played well around here, just in time for it to leave", Thomas said.More news: Brad Pitt Says He Gave Angelina Jolie $9 Million Since Split
"I was very confident going into this event from a year ago (equal third) and I love links golf and I'm playing in England, which is very rare".
Phatlum, who had started the day with a shot advantage, eventually fell short after a costly double-bogey on the pair's 71st hole of the tournament.
However, an errant drive on the eighth led to a bogey for the 28-year-old and Hall moved into a share of the lead thanks to a birdie from 10 feet on the 13th.
Phatlum put her tee shot on 17 into the sand trap and three-putted the hole to all but clear the way for Hall's victory.
Named in honor of a famous Masters victory, Georgia Hall has her hands on one of the big trophies in women's golf at the age of 22.More news: Google Pixel 3 XL just leaked in an unboxing video
She said: "I saw so many little girls come out, three or four-year-olds just wanting a picture with me".
Hall also fought back tears at the presentation ceremony as she dedicated the victory to her grandfather, saying: "There's someone very special at home that's going through a bad time so this is for you Grandad".
'It's incredible. I had so much support today from all the people backing me and supporting me and cheering my name. The way Hall kept her composure and kept producing the shots of her life down the stretch, there might be more to come. That regained a two-shot lead for Phatlum, who had also birdied the par-3 fifth hole.
Ryu So-yeon of South Korea was third on 13 under after a final-round 70. "I can't believe it really happened".
Hall looked set to take the outright lead after a brilliant approach to the par-5 15th left her with 15ft for an eagle. Her focus gone, the LPGA's 2017 Rookie of the Year wan't able to get her final round back on track.More news: Nintendo Announces Four New Characters For "Super Smash Bros. Ultimate'"
But Hall chose the ideal moment to showcase her best golf and took the lead at exactly the right moment, sinking a flawless 20-foot putt on the sixteenth after Phatlum had found the green-side bunker. But she packed five woods into her bag and plotted her way to birdies at the fourth, sixth, seventh, 10th and 16th holes in her flawless second round.