(CNN)Bryony Frost made horse racing history as she became the first woman jockey to win the prestigious King George VI Chase with a "dream" Boxing Day success on 20-1 outsider Frodon.
Female jockey makes history in famous Boxing Day steeplechase
The 25-year-old Frost led from start to finish to give trainer Paul Nicholls his 12th success in the race at Kempton Park on the outskirts of London as more fancied contenders fell away.
"I have just won the King George!" said a clearly emotional Frost after crossing the finish line.
"He has just smashed everyone's expectations. I don't argue with him too much as he is his own personality," she told ITV Sport.
Frost had previously enjoyed a landmark Grade One success at the 2019 Cheltenham Festival on Frodon and the pair worked their magic again despite being the least fancied of Nicholls' four runners in the race.
"I cannot stress how much this horse means to me -- he is my life. You dream as a little girl to ride a horse like this," added Frost.
Victory in a race rated second only to the Cheltenham Gold Cup for quality has also made Frost the most successful female jockey over jumps as she was well aware.
"I talked to my brother in the United States last night and I said I was one away from being the woman jockey with the most winners over jumps.
"He said 'how cool would it be to do it in the King George?'"