Prince Harry attended a "top secret" Google summer camp alongside Sir Elton John.
The flame-haired prince went to the annual event, run by Google co-founders Larry Page and Sergey Brin, at the £1,500-a-night Verdura Resort on the Italian island of Sicily, where business magnates meet to discuss the internet and human rights as well as other topics.
According to the Daily Mail newspaper, Harry rubbed shoulders with the likes of the 'Rocket Man' hitmaker, Emma Watson and Indian billionaire Lakshmi Mittal at the three-day conference.
The final evening of the bash features a concert at the Valley of the Temples ruins and a sit-down dinner, and Elton and Lenny Kravitz performed at this year's gig.
The conference is held in secrecy and guests access the itinerary through a password protected website.
Kensington Palace didn't comment on Harry's attendance at the event and told the publication they would not discuss his "private travel plans".
While it is not known why Harry was at the three-day summer camp, he is known to have taken an interest in the internet before when talking about mental health, but previously admitted he is not a fan of selfies.
When asked for a photo by a fan in Canberra, Australia, he is said to have responded: "No, I hate selfies."
He then urged a crowd of youngsters to take "normal" photos.
Harry said: "Seriously! You need to get out of it. I know you're young but selfies are bad.
"Just take a normal photograph."