This is the adorable moment a young boy met the Princess of Wales during a Wimbledon outing.

Video shows Marcelito Arévalo, three, softly shouting "Hi princess" and waving at the Princess of Wales as she walked past him and his mum.

Upon hearing the young boy, Princess Kate stops to greet him.

"What's your name?" she asks and adds: "Have you had a fun day?"

Marcelito was attending Wimbledon with his parents, Marcelo Arévalo and Lucia Kovarcikova, both 32, when he encountered Princess Kate at the daycare facility.

He had been staying at the daycare while his father Marcelo, a professional player and 2022 Roland Garros men's doubles champion, played at the tournament.

Marcelito's mother, a former tennis coach and beauty store owner, was picking him up from the facility, when she asked him if he "wanted to meet a princess".

She knew that the Princess was at the tournament and that she would be leaving soon.

Lucía, from Miami, Florida, USA, said: "The Wimbledon account had posted that the Princess was there.

"I knew she would be leaving because Andy Murray had just finished.

"I said 'Marcelito, would you like to meet a princess?' He seemed really excited to.

"I saw a lot of security appear, and I wasn't sure if it was her or Federer, but it was her."

Lucía added: "When we were waiting he was complaining saying 'I want to meet the princess, I want to meet the princess.'"

"The Princess seemed so genuine. She's been taking photos all day, but still took the time to make his day.

"He's three so I don't think he knew who she was but he was still really excited to meet a Princess."

The video was captured on July 4.