An outstandingly intelligent former rocket scientist has beaten 71 models to become the first British Mr World.
Jack Heslewood, 27, who has an IQ of 181, was officially crowned the world's "most desirable man" for 2019.
The hunk, from Bishop Stortford, Hertfordshire, won over judges in the global male beauty pageant after years of preparation.
Jack, whose sister is a former Miss England winner, said: "There was 71 other nations all fighting for the title, I had been preparing for the last few years.
"In the competition there are lots of different rounds, and you have to basically do as well as you can in every single round.
"So there is talent rounds, I played the drums - there was sports rounds and there is also an extreme sports round.
"Basically to win it you need to be a well rounded person. I love pondering the universe and knowing how things work. I like to be able to learn different cultures and be a people person."
All participants would have had to pass regional competitions first and become a representative for their country to then take part in the Mr World competition.
Jack, who graduated in aerospace engineering at Kingston University, said: "So I became Mr Hertfordshire and then I entered Mr England and then Mr World - then I was able to win that.
"It was extremely strong competition this year, it was the most number of competitors this year as well.
"Each round you generate points and the most number of points at the end means its down to some Q&A with some judges on the final night."
Jack, the 6ft 3ins brainbox, who will hold the title for a year, first became inspired when he decided to follow in his sister Kirsty's footsteps after she won Miss England in 2013.
Speaking previously, Jack, who models himself on Hollywood stars Ryan Gosling and Hugh Jackman, said: "As my sister has already won Miss England if I win it, it would just confirm what you're all thinking, we're the most attractive brother and sister in the country.
"I've not heard of another pair that's won both but I'll let the people decide."
Kirsty was voted Miss England 2013 and later came sixth out of 131 countries in Miss World - and is now a professional model who has appeared in Nivea commercials.
Jack, who set up his own technology-based advertising business in London, claims the pair are natural beauties with neither spending an "excessive amount of time" getting ready.
"It doesn't take me long to look my best - I just have a razor, electric beard trimmer, hair wax and exfoliate in my arsenal of cosmetics," he said.
"Kirsty doesn't spend hours and hours either - she's quick at getting ready too."
He added: "The country needs leadership and I would like to be that person to be the leader to inspire people to do different things."
Jack originally won the county title following a photoshoot and audition in front of a panel of judges, and has been offered sponsorship by Toni and Guy and Nuffield.
He said: "People are ignorant when they say it's a beauty contest - when they see all the work that goes into it.
"It's only people who have never actually seen any of the competitions.
"If people come and watch it and engage in some way, it would educate them."
The Mr World competition is a male beauty pageant sponsored by the Miss World Organisation where entrants compete in various activities including mountain biking, and marathon running.
The competition, which lasts for a month, is biennial and was founded in 1996.
Jack is the fifth European to be crowned Mr World in the 2019 contest and traditionally, Mr World will live in London during his reign.