Prince William and Kate Middleton really are the picture-perfect royal couple! The duo went on a three-hour hike to Tiger's Nest Monastery in the Himalayas of Bhutan on Friday and looked like they barely broke a sweat!

On their second day in the kingdom of Bhutan, the royal parents hiked to the Prayer Wheel, which is the most sacred Buddhist spot in the country.

Kate opted for a notable pair of Penelope Chilvers knee-high boots which she paired with a nubuck vest from the Really Wild Company.

Director of the National Museum Khenpo Phuntshok Tashi explained that the centerpiece is a giant Prayer Wheel around a group of 22 smaller wheels. Visitors, who make the pilgrimage, stop at the wheel, chant and say prayers, spinning each wheel.

The climb culminates at Paro Taktsang, otherwise known as Tiger's Nest – one of the most breathtaking temples in the world and also the most spiritual place in the whole of Bhutan.

American traveller Lauren McKennan and her friends ran into the royal twosome as she and her crew headed down. McKennan told press, "They were pretty altogether. There wasn't a single trail of sweat. They stopped to talk to us for three to five minutes and were absolutely charming."

Umm they're perfect!