Duke of Cambridge Prince William celebrated his very first Father's Day with the Duchess of Cambridge and their 10-month-old son Prince George at a charity polo match called the Jerudong Trophy Day at Cirencester Park Polo Club in Gloucestershire.

The event was intended to raise funds for several charities, including Child Bereavement UK, WellChild, and Centrepoint.

Prince William played against brother Prince Harry while Prince George was with his mother. Queen Elizabeth II also attended the event, Huffington Post reported.

Wearing a white polo shirt, red seersucker overalls and navy pre-walker shoes, Prince George played with a football under the supervision of the Duchess who was dressed in a Me + Em Breton-style top.

The little prince will turn one on July 22. This is the first time he is seen again public since April when the royal family toured in Australia and New Zealand.

At one point, Prince George was seen trying to crawl away from his mother going towards a polo pony but he was quickly picked up. Prince William was later on seen giving the little prince a sip of water from his water bottle, Vanity Fair reported.

One of the polo spectators told US Magazine, "You know George, wriggle, wriggle, wriggle! He was adorable. He was in Kate's arms most of the time, but she put him down on the ground a couple of times to play. He was grabbing one of the polo mallets at one point when Kate joined in with the divot stomping during a break. Kate seemed a bit nervous to let go of him though. She said, 'He's really fast!.'"

"He looks like he'll soon be walking. Kate would hold his arms and his little feet would toddle ahead. A couple of times he stood while just holding on to her with one hand. He's getting close," the spectator added.