The Royal Mail's Christmas stamps will feature traditional festive scenes this year, designed by two young girls.
The first class stamp shows Santa, drawn by seven-year-old Molly Robson, a pupil at Leechpool Primary School in Horsham, West Sussex, while the second class stamp features three singing angels, designed by 10-year-old Rosie Hargreaves, who goes to Ermington Primary School in Ivybridge, Devon.
The winning designs were chosen from over 240,000 entries received from children aged four to 11, in response to the question: What does the Christmas season mean to you?
It is only the third time in Royal Mail's near 500-year history that children have designed the Royal Mail's Christmas stamps.
The judging panel was led by the Prince of Wales, who presented a framed copy of the winning designs to the two girls.
Royal Mail chief executive officer, Moya Greene, said: "These wonderful images capture perfectly what Christmas means to many people throughout the UK.
"We were overwhelmed that the competition received more than 240,000 entries and Molly and Rosie now follow in the footsteps of some highly acclaimed children's designers and illustrators who have designed Royal Mail's Christmas stamps in the past ."
The two winning designs were unveiled at a ceremony in Clarence House where Rosie and Molly met the Prince of Wales.
Rosie, who is giving some of her prize money to the Cystic Fibrosis Trust, said: "It felt really amazing to win. I was very excited about meeting Prince Charles. I think mummy and daddy were more nervous than me!"
Rosie's father, John Hargreaves, who is a physics teacher, said: "When the Royal Mail phoned up to tell me that Rosie had won, I screamed out in joy. But then I was told it was a secret, so I had to pretend to my family that I was screaming because someone phoning about a good Ofsted report for my school."
Mr Hargreaves added: "Prince Charles said to Rosie that when she gets a bit better at the flute she can come back to play again at Clarence House. We are really looking forward to our next invitation!"
Molly said: "I was very excited that I won. The picture took me two afternoons to draw. I usually like to draw rainbows."
Molly's mother Clare Robson said: "Finding out that Molly had won was quite surreal, considering such a vast number of children took part. I know everyone at Molly's school will be really pleased."
Royal Mail chief executive officer Moya Greene was also present and said: "Prince Charles led the judging panel and he is an accomplished artist himself. I think he was being modest when he said to the girls that he does very bad watercolours!"
The prince presented the girls with framed certificates in the Garden Room at Clarence House.
The winners were also given a framed enlargement of their stamp, an original mint stamp and a leather-bound personalised copy of Royal Mail's Stamp Year Book.
As with all Special Stamps issued by Royal Mail, both winning designs were approved by The Queen.