The young royals donned the 80s' fashion accessory for the mental health charity Heads Together.
The £27 dressing gown worn by Prince George as he met President Obama, was sold out in minutes.
The Duchess of Cambridge wore a bijou L.K. Bennett dress while hosting the Obamas at Kensington Palace.
It was dubbed the cutest moment in history as the two-year-old royal shook hands with the President of the United States while wearing his pj's.
The annual economic contribution of the monarchy is forecast to steadily rise over the next five years
TripAdvisor has reported a 25% increase in bookings to India since Kate and Wills visited the country.
She came to the throne in a very different era - with a sizeable colonial empire, rationing and royal privacy.
Ahead of the Queen's 90th birthday, her grandson gave a rare insight to life in the royal family.
Actors Boyega and Ridley are filming Star Wars: Episode VIII at Pinewood Studios.
First time two-year-old heir has appeared on official royal stamp.
Camilla is a bit of a snob says author Christopher Anderson.
Duke of Cambridge said he looked to the Queen after he lost his mother at a young age.
The royals duelled with lightsabers and hugged Chewbacca on the set of Star Wars Episode VIII.
The Queen will turn 90 on 21 April but her official birthday, her second birthday, will be marked on 11 June.
The royals are meeting US President Obama and First Lady Michelle for a private dinner at Kensington Palace.
The Duke and Duchess of Cambridge visited the Taj Mahal on final day of their tour in India.
Prince William and Kate will pose at the 'Diana bench' and leave their signature next to Princess Diana's in the Taj Mahal's guest book.
The nitpicking has gone too far after writer Shobhaa Rajadhyaksha's comments.
Prince William went one better than his father Prince Charles, who on his trip broke off his hike to paint.
Prince William and Kate Middleton hiked up to the Buddhist monastery in Bhutan.
Royal couple toured Kaziranga National Park hours before poachers killed a great white rhino for its horn.
Prince William and Kate Middleton tried a spot of archery and darts in Bhutan.