Press Packers Alice and Oscar joined Ricky for a very special assignment - interviewing the future king of the United Kingdom, Prince William.
While Alice quizzed the prince on TV, Oscar got all the behind-the-scenes gossip for the website. Here's his report of the day in pictures....
"I was feeling excited and a bit nervous when we arrived at Clarence House, where Prince William lives. We had to wait at the gates and then someone showed us into the house."
"The house was really nice. My favourite bits were the massive marble fireplace in the waiting room and the gold harp in the garden room, which was bigger than me!"
"Before the prince came down we were shown the garden room where the TV interview would be filmed. It was really big and full of lights and cameras!"
"Then it was time to meet the prince! I was really shocked when he came in because he looked different to how he does in the photos. His hair and face looked a bit different."
"I was really excited to meet him, it was really cool. He asked me and Alice about our cancer treatment and then we just chatted about general things."
"He asked what fruit we like and I was quite shocked when he said he liked marmite and banana! He said we should try it, but I don't think I will."
"While the prince and Alice sat on the sofa for the interview, I was on the sofa behind the cameras watching it all. It's the first time I've seen anything being filmed for TV."
"Ricky quickly filmed a piece to camera while the cameramen were getting the cameras set up with the right angles and then it was time for Alice to ask Prince William the questions."
"Alice did a really good job and the prince was friendly and very funny. When he was talking about flying the helicopters he joked about not having dented any yet!"
"When Alice made a mistake at the end and said Prince Harry instead of Prince William, everyone started laughing. Prince William didn't mind and even said he was going to tell Harry."
"When the interview was over we all chatted a bit more and then posed for some photos with the prince."
"Afterwards, Alice filmed a quick chat with Ricky to go with the interview..."
"And I took a few more photos before it was time to pack up."
"It was good meeting Ricky on the Newsround team too, but I was surprised by how much equipment there was and how long it took to pack it all away!"