The Duchess of Cambridge has compared the sub-zero temperatures in Oslo to her days as a student in "freezing cold" Scotland.
Kate, who is six months pregnant with her third child, made the comments as she and the Duke of Cambridge went on an impromptu walkabout meeting Norwegian students at their high school.
Screams and shouts greeted their arrival at Hartvig Nissen School in Oslo where they were due to meet the stars of an innovative Norwegian drama.
After asking one student what he was studying Kate, who wore a Dolce and Gabbana coat, said: "I did physics and chemistry for A-level, no not physics biology."
When the pupil asked her about her schooling she said: "I went to a school called Marlborough College and then on to university which is where I met William, to St Andrews university in Scotland. Miles away, freezing cold. But I can't complain about that being here. It's much colder here."
She also spoke to 19-year-old Shaun Ondo and his 18-year-old friend Alfred Strande.
"I told her that her coat was burgundy and she said I had very good English," said Mr Ondo.
"It was nice to see them in real life and nice to see they are such friendly people."
His friend Mr Strande said: "We don't know much about the royal people from England. It was good that they took the time to say hello and shake hands."
Kate also asked some teens if they "have got exams coming up this summer? Good luck with everything."
They were joined by Crown Prince Haakon and Crown Princess Mette-Marit who followed behind their guests and also met the teenagers who had been waiting excitedly in sub-zero temperatures.
In the school William and Kate learnt about the popular series Skam, which attracted a legion of fans for its portrayal of issues including mental illness, homophobia and sexual assault.
Following on from the themes of the show, the characters started their own social media profiles to engage with the audience directly, creating an international following and fan base.
The royal couple met some of the stars and producers of Skam and chatted to students to learn about the effect the hard-hitting drama had on bringing issues they face into the open.
After a private lunch with Crown Prince Haakon and Crown Princess Mette-Marit at their home Skaugum, William and Kate will visit Holmenkollen, the snowy hills overlooking Oslo.
The couple will visit the Holmenkollen ski jump and museum and then watch a demonstration from some of Norway's top under-18 ski jumpers.
Before leaving for the UK, William and Kate will watch a group of local nursery children taking part in an afternoon ski lesson on the slopes and also join them for some outdoor activities such as roasting sausages on an open fire.