Scots student is on top of the world after becoming one of the youngest Britons to climb Mount Everest.
Geordie Stewart realised his dream on Thursday morning after four years of planning.
The 21-year-old reached the summit of mountain at 6.45am local time (2am UK time).
Having received the support of patrons such as Bear Grylls and Sir Ranulph Fiennes, the St Andrews University student took the original route pioneered by George Mallory and Andrew Irvine in 1924
Mr Stewart, from Hampshire, spoke to his father Hugh after he reached the summit, which is 8848m above sea level.
He said: "This is the most amazing moment of my life, I am standing at the highest point in the world. I can't quite believe it."
The student is now descending the mountain and will reach base camp in the next two to three days.
He broke the record of US teenager Johnny Collinson, who completed the challenge at the age of 17 last year.
George's mother Penny said she felt "elated and emotional".
The British Mountaineering Council has confirmed George's record, who was aged 16 years and 362 days when he reached the summit of Mount Everest.
George, who turns 17 on Sunday, began the challenge of climbing the highest peaks in seven continents at the age of 11 by scaling Mount Kilimanjaro in Tanzania.
Just get my boy down safe now!”
Penny Atkinson
He then climbed Russia's Mount Elbrus in 2007 and reached the summits of Indonesia's Carstensz Pyramid and Argentina's Mount Aconcagua in 2008.
Mount McKinley in North America was next, followed by Mount Vinson in Antarctica which he climbed late last year.
In her son's blog, Penny Atkinson announced the completion of his challenge: "George has done it. He reached the summit at about 8.15am Nepali time.
"It sounds as if the weather is good...
"A big thank you to everyone who has helped George to achieve his dream."
