Prince George and Princess Charlotte have been spotted enjoying a day out at Hyde Park, riding their bikes without stabilisers.

The candid sighting of the young royals has delighted fans, who are used to seeing them at official engagements with their parents, Prince William and Kate.

The photo, which was posted on Cam Duchess's Twitter account, shows five-year-old George wearing a red helmet while cycling on his blue bike, while three-year-old Charlotte had a pink bike and a blue helmet.

Their nanny, Maria Theresa Turrian Borallo, was on hand to watch the children, as was a plain-clothed protection officer.

The photo was taken over a week ago, and it's clear that William and Kate are determined to give their children as normal an upbringing as possible.

This means allowing them to enjoy normal days out, and the young royals are spoiled for choice when it comes to parks.

Their home, Kensington Palace, is located in Hyde Park and is also close to Green Park and St James's.

Last year, the Duchess of Cambridge revealed that her children are learning how to ride.

During a visit to a cycling-themed festival in Luxembourg, Kate met professional cyclist Frank Schleck, who later revealed that they talked about how the children really appreciate riding a bike.

For kids, it's great because they can exercise and, as long as it's safe, go to school without their parents.

She said their kids have bikes and that they're always excited about trying to ride.

It's heartening to see the young royals enjoying themselves like any other children, and it's clear that William and Kate are doing their best to give them a normal childhood.